temp: added new relic legacy support along with Datadog

[abdullahwaheed]

Added temporary support for NewRelicLoggingService. We'll remove this once we'll fully adapt Datadog

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[adamstankiewicz]

I'm not sure we should include @edx/frontend-platform as a regular dependency here as we'd risk including 2 copies of frontend-platform (potentially unnecessary increasing bundle size), instead of relying on the frontend-platform already installed by the consuming MFE application.

Should this be treated as a peerDependencies instead?

I'm also a bit concerned around needing to rely on @edx/frontend-platform to rely on its NewRelicLoggingService due to peer dependency conflicts when trying to roll this out. For example, if we introduce a peer dependency on @edx/frontend-platform for v8, MFEs that have not yet upgraded to v8 will need ensure its upgraded in the MFE first before their edx-internal configs can begin consuming DatadogLoggingService.

If we do the peer dependency approach, we'd probably want to list out all supported major versions of @edx/frontend-platform to mitigate the potential for peer dependency conflicts when consuming frontends begin using DatadogLoggingService.