feat: add label syncer

Author: moe-ad

.github/workflows/label.yml

@@ -16,8 +16,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
+    - uses: actions/checkout@v4
+
+    - name: "Sync labels"
+      uses: micnncim/action-label-syncer@3abd5ab72fda571e69fffd97bd4e0033dd5f495c # v1.3.0
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
     # Label based on modified files
-    - name: Label based on changed files
+    - name: "Label based on changed files"
       uses: actions/labeler@v4
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}