Implemented Plugin.cs to enable Application Singals Instrumentation.

[AsakerMohd]

Issue #, if available:

Description of changes:
This PR has multiple changes that were needed to get instrumentation working as expected. The changes are listed below:

1. Implemented Plugin.cs to inject the processors, AlwaysRecordSampler, and XrayIdGenerator to the otel instrumentation. This was based on the java instrumentation
2. Updated Build.cs to copy dependencies when creating the OpenTelemetry Distro. This needs to be refined since the dependencies are hard coded.
3. Added a new AwsMetricAttributesSpanProcessor.cs module that replaces AwsMetricAttributesSpanExporter.cs. AwsMetricAttributesSpanExporter is a wrapper that wraps around existing exporters to modify spans. Since we don't have access to these exporters, Created AwsMetricAttributesSpanProcessor which does the same thing as the exporter in terms of span modification and registered that processor as the first processor. Since, according to spec, processors are invoked in order of registration, we can be confident that the spans being exported would be modified as expected. The processor implementation is based on the java exporter implementation.
4. There has been a change to some of the http attributes keys that hold important http data that was made by OTEL. As a result, A list of attributes has been added to AwsSpanProcessingUtil.cs and link to semantic conventions is there for more info.

Testing:
Started up a sample app and collector and verified that the collector was getting spans that were populated with aws attributes for application signals and that appeared on the traces console on cloudwatch:

2024-05-28T18:44:52.301Z      info    TracesExporter  {"kind": "exporter", "data_type": "traces", "name": "logging", "resource spans": 1, "spans": 2}
otel-1  | 2024-05-28T18:44:52.301Z      info    ResourceSpans #0
otel-1  | Resource SchemaURL: 
otel-1  | Resource attributes:
otel-1  |      -> telemetry.distro.name: Str(aws-otel-dotnet-instrumentation)
otel-1  |      -> host.name: Str(f5bf6a1d41f5)
otel-1  |      -> process.owner: Str(root)
otel-1  |      -> process.pid: Int(1)
otel-1  |      -> process.runtime.description: Str(.NET 8.0.5)
otel-1  |      -> process.runtime.name: Str(.NET)
otel-1  |      -> process.runtime.version: Str(8.0.5)
otel-1  |      -> container.id: Str(f5bf6a1d41f53788db6a3b2859943a7c2ec92532036857c61dc5892a8851fab4)
otel-1  |      -> telemetry.distro.version: Str(1.6.0)
otel-1  |      -> telemetry.sdk.name: Str(opentelemetry)
otel-1  |      -> telemetry.sdk.language: Str(dotnet)
otel-1  |      -> telemetry.sdk.version: Str(1.8.1)
otel-1  |      -> service.name: Str(aws-otel-integ-test)
otel-1  | ScopeSpans #0
otel-1  | ScopeSpans SchemaURL: 
otel-1  | InstrumentationScope System.Net.Http 
otel-1  | Span #0
otel-1  |     Trace ID       : 66562623076d5f71658e7a84257d28de
otel-1  |     Parent ID      : 669b08274be25f69
otel-1  |     ID             : ac0e96a11a9fa988
otel-1  |     Name           : GET
otel-1  |     Kind           : Client
otel-1  |     Start time     : 2024-05-28 18:44:51.4112682 +0000 UTC
otel-1  |     End time       : 2024-05-28 18:44:51.997091 +0000 UTC
otel-1  |     Status code    : Unset
otel-1  |     Status message : 
otel-1  | Attributes:
otel-1  |      -> aws.local.operation: Str(GET /outgoing-http-call)
otel-1  |      -> http.request.method: Str(GET)
otel-1  |      -> server.address: Str(aws.amazon.com)
otel-1  |      -> server.port: Int(443)
otel-1  |      -> url.full: Str(https://aws.amazon.com/)
otel-1  |      -> network.protocol.version: Str(1.1)
otel-1  |      -> http.response.status_code: Int(200)
otel-1  |      -> aws.local.service: Str(aws-otel-integ-test)
otel-1  |      -> aws.remote.service: Str(aws.amazon.com:443)
otel-1  |      -> aws.remote.operation: Str(GET /)
otel-1  |      -> aws.span.kind: Str(ActivityKind)
otel-1  | ScopeSpans #1
otel-1  | ScopeSpans SchemaURL: 
otel-1  | InstrumentationScope Microsoft.AspNetCore 
otel-1  | Span #0
otel-1  |     Trace ID       : 66562623076d5f71658e7a84257d28de
otel-1  |     Parent ID      : 
otel-1  |     ID             : 669b08274be25f69
otel-1  |     Name           : GET outgoing-http-call
otel-1  |     Kind           : Server
otel-1  |     Start time     : 2024-05-28 18:44:51.1719128 +0000 UTC
otel-1  |     End time       : 2024-05-28 18:44:52.129685 +0000 UTC
otel-1  |     Status code    : Unset
otel-1  |     Status message : 
otel-1  | Attributes:
otel-1  |      -> server.address: Str(localhost)
otel-1  |      -> server.port: Int(8080)
otel-1  |      -> http.request.method: Str(GET)
otel-1  |      -> url.scheme: Str(http)
otel-1  |      -> url.path: Str(/outgoing-http-call)
otel-1  |      -> network.protocol.version: Str(1.1)
otel-1  |      -> user_agent.original: Str(Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:126.0) Gecko/20100101 Firefox/126.0)
otel-1  |      -> http.route: Str(outgoing-http-call)
otel-1  |      -> http.response.status_code: Int(200)
otel-1  |      -> aws.local.service: Str(aws-otel-integ-test)
otel-1  |      -> aws.local.operation: Str(GET outgoing-http-call)
otel-1  |      -> aws.span.kind: Str(LOCAL_ROOT)
otel-1  |       {"kind": "exporter", "data_type": "traces", "name": "logging"}


2024-05-28 11:45:42 2024-05-28T18:45:42.349Z    info    MetricsExporter {"kind": "exporter", "data_type": "metrics", "name": "logging", "resource metrics": 1, "metrics": 3, "data points": 6}
2024-05-28 11:45:42 2024-05-28T18:45:42.349Z    info    ResourceMetrics #0
2024-05-28 11:45:42 Resource SchemaURL: 
2024-05-28 11:45:42 Resource attributes:
2024-05-28 11:45:42      -> service.name: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> telemetry.sdk.name: Str(opentelemetry)
2024-05-28 11:45:42      -> telemetry.sdk.language: Str(dotnet)
2024-05-28 11:45:42      -> telemetry.sdk.version: Str(1.8.1)
2024-05-28 11:45:42 ScopeMetrics #0
2024-05-28 11:45:42 ScopeMetrics SchemaURL: 
2024-05-28 11:45:42 InstrumentationScope AwsSpanMetricsProcessor 
2024-05-28 11:45:42 Metric #0
2024-05-28 11:45:42 Descriptor:
2024-05-28 11:45:42      -> Name: Error
2024-05-28 11:45:42      -> Description: 
2024-05-28 11:45:42      -> Unit: 
2024-05-28 11:45:42      -> DataType: ExponentialHistogram
2024-05-28 11:45:42      -> AggregationTemporality: Delta
2024-05-28 11:45:42 ExponentialHistogramDataPoints #0
2024-05-28 11:45:42 Data point attributes:
2024-05-28 11:45:42      -> aws.local.operation: Str(GET /outgoing-http-call)
2024-05-28 11:45:42      -> aws.local.service: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> aws.remote.operation: Str(GET /)
2024-05-28 11:45:42      -> aws.remote.service: Str(aws.amazon.com:443)
2024-05-28 11:45:42      -> aws.span.kind: Str(ActivityKind)
2024-05-28 11:45:42 StartTimestamp: 2024-05-28 18:44:42.3570055 +0000 UTC
2024-05-28 11:45:42 Timestamp: 2024-05-28 18:45:42.3303903 +0000 UTC
2024-05-28 11:45:42 Count: 1
2024-05-28 11:45:42 Sum: 0.000000
2024-05-28 11:45:42 Min: 0.000000
2024-05-28 11:45:42 Max: 0.000000
2024-05-28 11:45:42 Bucket [0, 0], Count: 1
2024-05-28 11:45:42 ExponentialHistogramDataPoints #1
2024-05-28 11:45:42 Data point attributes:
2024-05-28 11:45:42      -> aws.local.operation: Str(GET outgoing-http-call)
2024-05-28 11:45:42      -> aws.local.service: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> aws.span.kind: Str(LOCAL_ROOT)
2024-05-28 11:45:42 StartTimestamp: 2024-05-28 18:44:42.3570055 +0000 UTC
2024-05-28 11:45:42 Timestamp: 2024-05-28 18:45:42.3303903 +0000 UTC
2024-05-28 11:45:42 Count: 1
2024-05-28 11:45:42 Sum: 0.000000
2024-05-28 11:45:42 Min: 0.000000
2024-05-28 11:45:42 Max: 0.000000
2024-05-28 11:45:42 Bucket [0, 0], Count: 1
2024-05-28 11:45:42 Metric #1
2024-05-28 11:45:42 Descriptor:
2024-05-28 11:45:42      -> Name: Fault
2024-05-28 11:45:42      -> Description: 
2024-05-28 11:45:42      -> Unit: 
2024-05-28 11:45:42      -> DataType: ExponentialHistogram
2024-05-28 11:45:42      -> AggregationTemporality: Delta
2024-05-28 11:45:42 ExponentialHistogramDataPoints #0
2024-05-28 11:45:42 Data point attributes:
2024-05-28 11:45:42      -> aws.local.operation: Str(GET /outgoing-http-call)
2024-05-28 11:45:42      -> aws.local.service: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> aws.remote.operation: Str(GET /)
2024-05-28 11:45:42      -> aws.remote.service: Str(aws.amazon.com:443)
2024-05-28 11:45:42      -> aws.span.kind: Str(ActivityKind)
2024-05-28 11:45:42 StartTimestamp: 2024-05-28 18:44:42.3601183 +0000 UTC
2024-05-28 11:45:42 Timestamp: 2024-05-28 18:45:42.330461 +0000 UTC
2024-05-28 11:45:42 Count: 1
2024-05-28 11:45:42 Sum: 0.000000
2024-05-28 11:45:42 Min: 0.000000
2024-05-28 11:45:42 Max: 0.000000
2024-05-28 11:45:42 Bucket [0, 0], Count: 1
2024-05-28 11:45:42 ExponentialHistogramDataPoints #1
2024-05-28 11:45:42 Data point attributes:
2024-05-28 11:45:42      -> aws.local.operation: Str(GET outgoing-http-call)
2024-05-28 11:45:42      -> aws.local.service: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> aws.span.kind: Str(LOCAL_ROOT)
2024-05-28 11:45:42 StartTimestamp: 2024-05-28 18:44:42.3601183 +0000 UTC
2024-05-28 11:45:42 Timestamp: 2024-05-28 18:45:42.330461 +0000 UTC
2024-05-28 11:45:42 Count: 1
2024-05-28 11:45:42 Sum: 0.000000
2024-05-28 11:45:42 Min: 0.000000
2024-05-28 11:45:42 Max: 0.000000
2024-05-28 11:45:42 Bucket [0, 0], Count: 1
2024-05-28 11:45:42 Metric #2
2024-05-28 11:45:42 Descriptor:
2024-05-28 11:45:42      -> Name: Latency
2024-05-28 11:45:42      -> Description: 
2024-05-28 11:45:42      -> Unit: Milliseconds
2024-05-28 11:45:42      -> DataType: ExponentialHistogram
2024-05-28 11:45:42      -> AggregationTemporality: Delta
2024-05-28 11:45:42 ExponentialHistogramDataPoints #0
2024-05-28 11:45:42 Data point attributes:
2024-05-28 11:45:42      -> aws.local.operation: Str(GET /outgoing-http-call)
2024-05-28 11:45:42      -> aws.local.service: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> aws.remote.operation: Str(GET /)
2024-05-28 11:45:42      -> aws.remote.service: Str(aws.amazon.com:443)
2024-05-28 11:45:42      -> aws.span.kind: Str(ActivityKind)
2024-05-28 11:45:42 StartTimestamp: 2024-05-28 18:44:42.3602267 +0000 UTC
2024-05-28 11:45:42 Timestamp: 2024-05-28 18:45:42.3305067 +0000 UTC
2024-05-28 11:45:42 Count: 1
2024-05-28 11:45:42 Sum: 585.822800
2024-05-28 11:45:42 Min: 585.822800
2024-05-28 11:45:42 Max: 585.822800
2024-05-28 11:45:42 Bucket (585.822472, 585.822859], Count: 1
2024-05-28 11:45:42 ExponentialHistogramDataPoints #1
2024-05-28 11:45:42 Data point attributes:
2024-05-28 11:45:42      -> aws.local.operation: Str(GET outgoing-http-call)
2024-05-28 11:45:42      -> aws.local.service: Str(aws-otel-integ-test)
2024-05-28 11:45:42      -> aws.span.kind: Str(LOCAL_ROOT)
2024-05-28 11:45:42 StartTimestamp: 2024-05-28 18:44:42.3602267 +0000 UTC
2024-05-28 11:45:42 Timestamp: 2024-05-28 18:45:42.3305067 +0000 UTC
2024-05-28 11:45:42 Count: 1
2024-05-28 11:45:42 Sum: 957.772200
2024-05-28 11:45:42 Min: 957.772200
2024-05-28 11:45:42 Max: 957.772200
2024-05-28 11:45:42 Bucket (957.772169, 957.772802], Count: 1

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[vastin]

Following wrong span kind value is known issue and fixed in other PR.

aws.span.kind:` Str(ActivityKind)

[vastin]

LGTM

[birojnayak]

added one more comment

[vastin]

Create an issue #22 to track the follow-up actions for comments.

[birojnayak]

Create an issue #22 to track the follow-up actions for comments.

thank you @vastin ..