[#164] .forgejo: Add clang-format support

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

.forgejo/workflows/tests.yml

@@ -20,6 +20,27 @@ jobs:
       - name: Run linters
         run: make lint
 
+  check-format:
+    name: Check format
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install deps
+        run: |
+         apt update
+         apt install -y clang-format
+
+      - name: Run clang-format
+        run: clang-format -i **/*.js
+
+      - name: Print diff
+        run: git diff HEAD
+
+      - name: Check that nothing has changed
+        run: git diff-index --exit-code HEAD
+
   tests:
     name: Tests
     runs-on: ubuntu-latest