dwm picom added

dwm/picom/.github/workflows/coding-style-pr.yml

@@ -0,0 +1,13 @@
+name: coding-style
+on: pull_request
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - run: git fetch --depth=1 origin ${{ github.event.pull_request.base.sha }}
+    - uses: yshui/git-clang-format-lint@v1.11
+      with:
+        base: ${{ github.event.pull_request.base.sha }}