Add style check to workflow (#2062)

* Add style check to workflow

* Add example files to style check

.github/workflows/test.yaml

@@ -24,6 +24,18 @@ env:
   GTEST_FILTER: ${{ github.event.inputs.gtest_filter || '*' }}
 
 jobs:
+  style-check:
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
+    continue-on-error: true
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+      - name: run style check
+        run: |
+          clang-format --version
+          cd test && make style_check
+
   ubuntu:
     runs-on: ubuntu-latest
     if: >