Add daily-repo-status agentic workflow

[sumitmsft]

This pull request introduces a new workflow for generating daily repository status reports and adds supporting configuration and lock files. The main focus is on automating daily insights and activity summaries for the repository, while ensuring workflow dependencies are tracked and managed.

Daily status reporting automation:

• Added .github/workflows/daily-repo-status.md workflow to automatically create daily GitHub issues summarizing recent repository activity, progress, and recommendations in an engaging and concise format.

Workflow configuration and dependency management:

• Added .github/aw/actions-lock.json to lock workflow action versions and SHAs for reproducibility and security in GitHub Actions workflows.
• Updated .gitattributes to mark workflow lock files as generated and set merge strategy to ours to avoid merge conflicts.

[sumitmsft]

Closing - reverting per author request.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.75%. Comparing base (78b006f) to head (b63f141).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1607   +/-   ##
=======================================
  Coverage   85.75%   85.75%           
=======================================
  Files          23       23           
  Lines        7223     7223           
=======================================
  Hits         6194     6194           
  Misses       1029     1029           

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[sumitmsft]

Reopening - the flagged 'secrets' are GitHub Actions secret name references and pinned commit SHAs (security best practice), not actual credentials.