Add documentation for Google org Gemini AI workflow examples for issue triage

[Copilot]

This PR adds comprehensive documentation of GitHub Actions workflows from Google's organization repositories that use Gemini AI to automatically review and triage issues and issue comments.

What's Added

A new documentation file docs/google-gemini-workflows.md that provides:

Complete Workflow Examples

1. Automated Issue Triage (from google/draco)

   • Triggers automatically when issues are opened, reopened, or when collaborators comment with @gemini-cli /triage
   • Uses Gemini AI to analyze issue content and apply appropriate labels
   • Includes error handling with automatic failure notifications

2. Scheduled Issue Triage (from google/draco)

   • Runs hourly to find and triage unlabeled or untriaged issues
   • Performs batch processing of multiple issues
   • Deduplicates issues before processing

Key Features Documented

• Full YAML workflow configurations ready to adapt
• Integration with google-github-actions/run-gemini-cli@v0 action
• Configuration requirements (secrets, variables, permissions)
• Prompts for instructing Gemini AI on triage tasks
• Use of GitHub CLI for automated labeling
• Concurrency control to prevent conflicts

Additional Resources

Links to similar workflows in other Google repositories:

• google/adk-samples: Automated and scheduled issue triage
• google/syzkaller: PR review workflows
• google/secops-wrapper: Gemini review and dispatch workflows

Benefits

This documentation enables developers to:

• Understand how Google implements AI-powered issue management
• Adapt these patterns for their own repositories
• Automate issue triage and reduce manual categorization effort
• Implement consistent labeling across projects

The README has also been updated with a new "Documentation" section linking to this guide.

Original prompt

Find me all examples of google org using workflow files that will review an issue or issue comment with gemini AI

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