ci: add clang-format checking

Signed-off-by: ik <hello_ik@outlook.com>

Author: hiiiik

.github/workflows/clang_format.yml

@@ -0,0 +1,34 @@
+# Copyright 2025 openGemini Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Clang Format
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  clang-format:
+    runs-on: debian-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install clang-format
+        run: sudo apt-get update && sudo apt-get install -y clang-format
+      - name: Run clang-format
+        run: find . -name "*.cpp" -o -name "*.hpp" -o -name "*.tpp" -o -name "*.ipp" | xargs clang-format -i
+      - name: Check for unformatted code
+        run: git diff --exit-code