Google Analytics: automatically label changes to package

[jeherve]

See #37137

Proposed changes:

The Google Analytics feature now also lives in a package. Let's handle that in our action.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

• Google Analytics: deprecate feature #36920

Does this pull request change what data or activity we track or use?

• No

Testing instructions:

Note

This can only be tested in a fork.

• In your fork, merge this branch to trunk.
• Open a new PR in your fork, for a new branch to trunk, making a change to one of the files in projects/packages/google-analytics/.
  • The "[Feature] Google Analytics" label should be automatically added to the PR.

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

• ✅ Include a description of your PR changes.
  
• ✅ Add a "[Status]" label (In Progress, Needs Team Review, ...).
  
• ✅ Add testing instructions.
  
• ✅ Specify whether this PR includes any changes to data or privacy.
  
• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

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