Further net - pullrequest tuning

[scbedd]

This PR:

• Removes the isOther function in language-settings as the built-in functionality in Get-PrPkgProperties now resolves for Shared packages if the necessary metadata is present.
• Ensures that we don't include all service.project files when a overridefile is presented (which was what was causing azure.core tests to show up everywhere)
• Removes the "add all packages for service directory if *.Shared-named package is present" in favor of a explicit usage of triggeringPaths. Now if Azure.Messaging.EventHubs.Shared is changed, we will indirectly run tests for Azure.Messaging.EventHubs and Azure.Messaging.EventHubs.Processor, but NONE of the other track1 / functions packages. @jsquire FYI
• Make IntegrationTests a class of package that can be directly excluded from property. Exclude integration test packages from pack for PRs.

todo:

• Walk all incidences Shared packages like for eventhub to ensure their triggeringPaths are configured properly.
• Understand why we are so aggressively adding Microsoft. packages when we've explicitly updated the language-settings to not cause that anymore.
  • Need changes to ci.yml files must only apply to the artifacts within. (this is why the microsoft eventhub namespaces are being added rn)

[scbedd]

@weshaggard ok I think this is ready to go in. There is another cleanup commit I could do re: removing the triggering paths for template, but honestly I don't want to add another commit to this PR. There will be one last follow-up where I figure out what I want to do with service-level changes to directories with multiple ci.yml files, and I'll clean up the triggering paths there.

[scbedd]

/check-enforcer override

The snippets issue in analyze for keyvault is present in main, so ignoring on this PR.