add code format check

.github/workflows/code-format-check.yml

@@ -0,0 +1,21 @@
+name: C++ Code Check
+on: [ push, pull_request ]
+jobs:
+  formatting-check:
+    name: Check C++ Code Formatting
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+       path:
+         - check: 'include'
+         - check: 'src'
+           exclude: 'ext'
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run clang-format style check for C/C++/Protobuf programs.
+        uses: jidicula/[email protected]
+        with:
+          clang-format-version: '18'
+          check-path: ${{ matrix.path['check'] }}
+          exclude-regex: ${{ matrix.path['exclude'] }}
+          fallback-style: 'LLVM'