Add formatting chcek to workflows.

Author: nikoshell

.github/workflows/formatting.yml

@@ -0,0 +1,31 @@
+name: Check Formatting
+
+on: 
+  push:
+    branches:
+      - ep2025
+  pull_request:
+
+jobs:
+  format-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          run_install: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: "pnpm"
+
+      - name: Install dependencies
+        run: make install
+
+      - name: Check Formatting
+        run: pnpm format --check