Add eslint and run linter in workflow

.github/workflows/ci.yml

@@ -0,0 +1,42 @@
+name: Project CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+  workflow_dispatch:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [24.x]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 10
+
+      - name: Cache NPM Deps
+        id: cache-npm
+        uses: actions/cache@v3
+        with:
+          path: node_modules/
+          key: npm-${{ hashFiles('package-lock.json') }}
+
+      - name: Install NPM Deps
+        if: ${{ steps.cache-npm.outputs.cache-hit != 'true' }}
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint