Setup eslint workflow

.github/workflows/eslint.yml

@@ -0,0 +1,30 @@
+name: Eslint
+
+on:
+  push:
+    branches:
+      - "*"
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  eslint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 21
+
+      - name: Install dependencies
+        run: |
+          npm install
+
+      - name: Run ESLint
+        run: |
+          npm run lint