Add Google Cloud IAM and Artifact Registry integration logos

Purpose

Part of our partnership with Google to integrate with Google Cloud. More specifically the Artifact Registry workstream and the onboarding workstream. Also, according to &8370, each integration should have a logo.

Screenshots

Artifact Registry	IAM

Checklist

For a new icon and/or illustration:

• Link to related design issue:
• If this adds an icon ensure that it follows the new icon checklists.
• If this adds an illustration ensure that it follows the new illustration checklists.

For third-party trademarks:

• If this adds or updates an icon or illustration that includes a third-party trademark, ensure that it follows the process for adding third-party trademarks to GitLab.
  •   https://gitlab.com/gitlab-com/legal-and-compliance/-/issues/1953+
  •   https://gitlab.com/gitlab-com/legal-and-compliance/-/issues/1952+