[CORE-346] Add getGoogleProjects and getGoogleProjectById APIs

[kevinmarete]

Ticket: https://broadworkbench.atlassian.net/browse/CORE-346

This PR adds two endpoints to manage Google projects:

• GET /googleProjects Lists Google projects the user can access. It also supports optional filtering by billing project.
• GET /googleProjects/{googleProjectId} Retrieves a Google project if accessible.

Notes:

---

• Includes error handling for missing or unauthorized projects.
• Tests cover both endpoints and edge cases.
• Added read action to sam to support permissions check

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PR checklist

• Include the JIRA issue number in the PR description and title
• Make sure Swagger is updated if API changes
  • ...and Orchestration's Swagger too!
• If you changed anything in model/, then you should publish a new official rawls-model and perform the corresponding dependency updates as specified in the README:
  • in the automation subdirectory
  • in workbench-libs
  • in firecloud-orchestration
• Get two thumbsworth of PR review
• Verify all tests go green, including CI tests
• Squash commits and merge to develop (branches are automatically deleted after merging)
• Inform other teams of any substantial changes via Slack and/or email

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Files not reviewed (13)

• core/src/main/resources/swagger/api-docs.yaml: Language not supported
• core/src/main/scala/org/broadinstitute/dsde/rawls/dataaccess/slick/GoogleProjectRegistrationComponent.scala: Language not supported
• core/src/main/scala/org/broadinstitute/dsde/rawls/googleProject/GoogleProjectRegistrationRepository.scala: Language not supported
• core/src/main/scala/org/broadinstitute/dsde/rawls/googleProject/GoogleProjectRegistrationService.scala: Language not supported
• core/src/main/scala/org/broadinstitute/dsde/rawls/model/SamModel.scala: Language not supported
• core/src/main/scala/org/broadinstitute/dsde/rawls/webservice/GoogleProjectRegistrationApiService.scala: Language not supported
• core/src/test/scala/org/broadinstitute/dsde/rawls/dataaccess/slick/GoogleProjectRegistrationComponentSpec.scala: Language not supported
• core/src/test/scala/org/broadinstitute/dsde/rawls/googleProject/GoogleProjectRegistrationRepositorySpec.scala: Language not supported
• core/src/test/scala/org/broadinstitute/dsde/rawls/googleProject/GoogleProjectRegistrationServiceSpec.scala: Language not supported
• core/src/test/scala/org/broadinstitute/dsde/rawls/model/SamModelSpec.scala: Language not supported
• core/src/test/scala/org/broadinstitute/dsde/rawls/webservice/GoogleProjectRegistrationApiServiceSpec.scala: Language not supported
• model/src/main/scala/org/broadinstitute/dsde/rawls/model/GoogleProjectRegistrationModel.scala: Language not supported
• model/src/test/scala/org/broadinstitute/dsde/rawls/model/GoogleProjectRegistrationModelSpec.scala: Language not supported

[dvoet]

1 minor change then 👍

[davidangb]

I also have 1 minor change then 👍