ci: add ci for checking format

Signed-off-by: Lukas.J.Han <[email protected]>

.github/workflows/ci.yaml

@@ -25,6 +25,22 @@ jobs:
         with:
           path: ${{ github.workspace }}
           key: ${{ runner.os }}-build-${{ github.sha }}-${{ github.run_id }}
+
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
+        with:
+          version: 9
+      - run: pnpm add -g pnpm
+      - name: 'Setup Node.js with pnpm cache'
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'pnpm'
+      - run: pnpm install
+      - run: pnpm format:check
 
   bundlewatch:
     runs-on: ubuntu-latest