Add workflow for linting frontend (#30)

.github/workflows/lint-frontend.yml

@@ -0,0 +1,26 @@
+name: Lint Frontend
+
+on:
+  pull_request:
+    branches: [main]
+    paths:
+      - 'frontend/**'
+
+defaults:
+  run:
+    working-directory: ./frontend
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+      - name: Setup Node
+        uses: actions/setup-node@v2
+        with:
+          node-version: 23
+      - name: Install dependencies
+        run: npm ci --legacy-peer-deps
+      - name: Lint codebase
+        run: npm run lint