feat: Add GitHub Actions workflow for automated testing with Node.js

.github/workflows/tests.yml

@@ -0,0 +1,34 @@
+name: Test
+
+on:
+  pull_request:
+    branches:
+      - main
+
+env:
+  NODE_VERSION: '20'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Use Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build application
+        run: npm run build
+
+      - name: Run tests
+        run: npm test
+
+