Introduce Google Cloud Run deployment example

[ag-adampike]

This PR is to establish a new Cloud Run deployment example for SCIM Bridge, including:

• Cloud Run service YAML
• README with steps to deploy SCIM Bridge using Cloud Shell
• subfolder with README and config for connecting to Google Workspace

For review:

• [x] validate steps in /beta/google-cloud-run/README.md
• [x] validate steps to connect to Workspace: /beta/google-cloud-run/google-workspace/README.md

[ag-adampike]

Thanks for the look! I've got some local work that is almost ready to commit that resolves a bit of this already. 🙂

[ag-adampike]

All links should be pointing the their new home on main once this is merged. :-)