Add github action for checkstyle

.github/workflows/pr-checkstyle.yml

@@ -0,0 +1,15 @@
+name: checkstyle
+on: [pull_request]
+jobs:
+  checkstyle:
+    name: runner / checkstyle
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dbelyaev/action-checkstyle@master
+        with:
+          github_token: ${{ secrets.github_token }}
+          reporter: github-pr-review
+          level: error
+          checkstyle_version: "10.3"
+          fail_on_error: true