Add Google Cloud support

[michael-chi]

In related to #39

• GitHub Actions as the CI/CD platform.
• Ability to generate ML project from the cookiecutter template. Which allows the user to configure:
  • ML Project
  • CI/CD platform (Github Actions)
  • Choose Google Cloud as the cloud provider
  • Enable Feature Store
  • Production / Staging workspaces
  • ML experiment parent directory
  • Github branches
• Integration between GitHub Actions and Google Cloud.
  • Authentication through Workload Identity Pool.
  • Setup and configure required Google Cloud permissions / roles through Terraform.
• Add required configuration and setup instructions to the readme.

[arpitjasa-db]

Hi @michael-chi @stawo, we've made some pretty significant changes to MLOps Stacks since this PR was opened, would you be interested in updating your PR?

[stawo]

@arpitjasa-db , I don't own this PR, I just did a small and incomplete review of it 😄 Let's see if @michael-chi will update the PR following the latest changes.

[arpitjasa-db]

Closing this since we now support GCP with https://github.com/databricks/mlops-stacks/pull/153