ci: Workflow for checking formatting

.github/workflows/formatting.yml

@@ -0,0 +1,14 @@
+name: Check formatting
+
+on: [push, pull_request, workflow_dispatch]
+
+jobs:
+  check_formatting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run clang-format
+        uses: jidicula/[email protected]
+        with:
+          clang-format-version: 18
+          check-path: .