chore: Add restyled workflow in common CI actions.

.github/workflows/ci.yml

@@ -6,4 +6,4 @@ on:
 
 jobs:
   common:
-    uses: TokTok/ci-tools/.github/workflows/common-ci.yml@master
+    uses: ./.github/workflows/common-ci.yml

.github/workflows/common-ci.yml

@@ -14,3 +14,16 @@ jobs:
           chmod +x buildifier
       - name: Check
         run: ./buildifier --lint=warn --warnings=all -mode diff $(find . -type f -name "WORKSPACE" -or -name "BUILD.*")
+
+  restyled:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - uses: restyled-io/actions/setup@v4
+      - id: restyler
+        uses: restyled-io/actions/run@v4
+        with:
+          fail-on-differences: true