Enabling Code Sign Validation through 1ES template

[MSLukeWest]

Description

Enabling code signing validation in the main merq pipeline through the 1ES pipeline template.

See https://eng.ms/docs/cloud-ai-platform/devdiv/one-engineering-system-1es/1es-docs/1es-pipeline-templates/features/sdlanalysis/codesignvalidation

As part of this I'm getting rid of the "symbols" artifact, as it was collecting the unsigned assemblies. I also noticed the upload step wasn't actually doing anything, so I removed it.

Part of task https://devdiv.visualstudio.com/DevDiv/_workitems/edit/2268473

PR Checklist

• Title is meaningful

• Work Item is linked

• Changes are described

• Tests

  • Automated tests are added
  • OR
  • Infrastructure
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  • Upcoming sprint Work Item:
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  • Test exception

[emaf]

@MSLukeWest main will no longer receive updates as we are removing this component from VS.

[MSLukeWest]

@MSLukeWest main will no longer receive updates as we are removing this component from VS.

Right. I'll close this, and we can port it to older branches later if necessary.