Draft Example GitHub Action Workflow for Monthly Issue Report Automation

[rmallorybpc]

Draft a .github/workflows/monthly-content-review.yml workflow that:

1. Runs on the 1st of every month.
2. Queries open issues in githubpartners/microsoft-learn with relevant labels (content-update, deprecated-feature, etc).
3. Aggregates feedback into markdown by category (grammar/spelling, deprecated, suggested, other), each with counts and links to representative issues (see meta issue for examples).
4. Commits a monthly report to /reports/monthly-report-YYYY-MM.md
5. Posts a short summary as a comment on the meta content review issue.
   Workflow should gracefully handle API pagination limits and notify if result set may be incomplete.
   Optionally: Export category counts and issue links in a machine-readable format (JSON/CSV) alongside the markdown report.