Add PR label action

.github/workflows/pr-labels.yml

@@ -0,0 +1,45 @@
+name: Pull Request Labels
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, labeled, unlabeled]
+
+jobs:
+  check-labels:
+    runs-on: ubuntu-latest
+    env:
+      GH_TOKEN: ${{ github.token }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check for Pull Request Labels
+        run: |
+          REQUIRED_LABELS=("documentation" "bugfix" "chore" "enhancement" "ignore-for-release" "security" "sorbet")
+          LABELS=$(gh pr view --json labels --jq ".labels[] .name" ${{ github.event.pull_request.number }})
+
+          errorMessage=""
+          if [ -z "$LABELS" ]; then
+            echo "No labels found on PR"
+            errorMessage="No labels found on PR"
+          else
+            for label in $LABELS; do
+              if [[ "${REQUIRED_LABELS[@]}" =~ "${label}" ]]; then
+                echo "Matched label $label"
+                exit 0
+              fi
+            done
+
+            echo "No matching required labels found on PR"
+            errorMessage="No matching label found"
+          fi
+
+          if [ -n "$errorMessage" ]; then
+            echo "### Pull Request Labels" > comment.md
+            echo "" >> comment.md
+            echo "$errorMessage" >> comment.md
+            echo "" >> comment.md
+            echo "Please add one of the following labels to your pull request:" >> comment.md
+            echo "" >> comment.md
+            gh pr comment ${{ github.event.pull_request.number }} --body-file comment.md --edit-last
+            exit 1
+          fi
+        shell: bash