Draft: Button to revoke Google API authorizations

What does this MR do and why?

In the Projects :: Infra :: Google Cloud section, include a revoke button that allows users to revoke the Google OAuth2 token.

Screenshots or screen recordings

How to set up and validate locally

1. Enable incubation_5mp_google_cloud feature flag for a test project
2. In GitLab web ui, navigate to project
3. Go to Infra :: Google Cloud page
4. Press the Revoke Auth button
5. Next time you try to create a service account, you will have to go thru the Google OAuth2 process

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.