Setup mark installation (#1)

.github/workflows/sync-labels.yml

@@ -0,0 +1,23 @@
+---
+name: Sync labels
+
+on: # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - main
+    paths:
+      - .github/labels.yml
+      - .github/workflows/sync-labels.yml
+  workflow_dispatch:
+
+jobs:
+  sync-labels:
+    name: Sync labels
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout ${{ github.repository }}
+        uses: actions/checkout@v4
+      - name: Run Label Syncer
+        uses: micnncim/action-label-syncer@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}