added labels workflow

Author: Joshua Fish

.github/workflows/ci-require-labels.yml

@@ -0,0 +1,19 @@
+# Require labels to be added to a PR before merging
+# This is configured as a branch protection setting
+name: CI Require Labels
+on:
+  pull_request:
+    types: [opened, labeled, unlabeled, synchronize]
+  merge_group:
+run-name: CI Require Labels ${{ github.sha }} by @${{ github.actor }}
+jobs:
+  require-labels:
+    if: ${{ github.event_name == 'pull_request' }}
+    runs-on: ubuntu-latest
+    outputs:
+      status: ${{ steps.require-labels.outputs.status }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Require Labels
+        id: require-labels
+        uses: nullify-platform/github-actions/actions/require-labels@main