Add GitHub Copilot Coding Agent to this repo

[msabramo]

This would allow assigning issues to the coding agent to create draft PRs and I believe it would also give the ability to click an "Explain logs" button for failed GitHub Action workflows?

https://docs.github.com/en/enterprise-cloud@latest/copilot/using-github-copilot/using-copilot-coding-agent-to-work-on-tasks/about-assigning-tasks-to-copilot