Azure Boards integration with GitHub Copilot (Private Preview)

Introduced the ability to connect Azure Boards work items with the GitHub Copilot coding agent. Users can now create and fill out work items in Azure Boards and send them directly to GitHub Copilot for tasks such as fixing bugs, implementing incremental features, improving test coverage, updating documentation, and addressing technical debt. The integration involves sending work item details (description, repro steps, last 50 comments) to the Copilot coding agent, which generates a branch and a draft pull request automatically linked back to the work item for traceability. The status is updated on the work item upon completion, and a comment notifies the user that the pull request is ready for review. Requirements include GitHub repos, enabled Azure Boards and GitHub integration, Copilot coding agent enabled on repositories, and updated Azure Boards app permissions.