GitHub Actions: Add a labeler action
Use the following GitHub action to automatically label pull requests
based on the paths of the modified files:
https://github.com/marketplace/actions/labeler
Use it to label pull requests introducing new status reports with the
'status report' label.
Approved by: uqs (github-automation), dbaio (doceng)
Pull Request: https://github.com/freebsd/freebsd-doc/pull/121