👷 Add GitHub Action label-checker (#68)

Author: tiangolo

.github/workflows/labeler.yml

@@ -1,6 +1,13 @@
-name: Pull Request Labeler
+name: Pull Request Labeler and Checker
 on:
   pull_request_target:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      # For label-checker
+      - labeled
+      - unlabeled
 
 jobs:
   labeler:
@@ -10,3 +17,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/labeler@v5
+  # Run this after labeler applied labels
+  check-labels:
+    name: Check labels
+    runs-on: ubuntu-latest
+    steps:
+      - uses: docker://agilepathway/pull-request-label-checker:latest
+        with:
+          one_of: breaking,security,feature,bug,refactor,upgrade,docs,lang-all,internal
+          repo_token: ${{ secrets.GITHUB_TOKEN }}