Add CI

.github/workflows/lint.yaml

@@ -0,0 +1,27 @@
+name: Lint
+
+on:
+  push:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run TypeScript
+        run: npm run check
+
+      - name: Run ESLint
+        run: npm run lint