Add content: Integrating Copilot Coding Agent with Azure Boards

## Summary

Add a new section or module covering how to use the Copilot coding agent with Azure Boards, based on the [official GitHub docs](https://docs.github.com/en/copilot/how-tos/use-copilot-agents/cloud-agent/integrate-cloud-agent-with-azure-boards).

## Content to cover

- **Overview** – How the Azure Boards GitHub integration allows invoking Copilot cloud agent directly from a work item, generating PRs without leaving Azure DevOps.
- **Prerequisites**
- GitHub account with a paid Copilot plan
- Repositories connected to Azure DevOps must have Copilot cloud agent enabled
- **Installing the Azure Boards app on GitHub**
- Install from the [GitHub Marketplace](https://github.com/marketplace/azure-boards)
- Select org/repositories and authorize in Azure DevOps
- **Approving updated app permissions** – For existing Azure Boards installs, approving new permissions to allow communication with GitHub Copilot
- **Creating a PR from a work item** – Step-by-step walkthrough:
1. Open the work item in Azure Boards
2. Click the Copilot icon
3. Select **Create a pull request with Copilot**
4. Choose repo, base branch, add optional extra instructions
5. Click **Create** — Copilot creates a draft PR linked back to the work item

## Notes / Context

- When a work item is sent to Copilot cloud agent, text fields (description, reproduction steps) and the last 50 comments are captured as context and stored in the PR — visible to anyone with repo access.
- Reference: [Responsible use of GitHub Copilot cloud agent](https://docs.github.com/en/copilot/responsible-use/copilot-cloud-agent)

## Suggested placement

Add as a new lab or reference page in the bootcamp materials, likely alongside other Copilot coding agent content.

## References

- https://docs.github.com/en/copilot/how-tos/use-copilot-agents/cloud-agent/integrate-cloud-agent-with-azure-boards
- https://docs.github.com/en/copilot/concepts/agents/cloud-agent/about-cloud-agent