Add CI workflow

.github/workflows/ci.yaml

@@ -0,0 +1,30 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22.x'
+      - name: Run install
+        run: |
+          for dir in examples/*/; do
+            echo "::group::Installing $(basename "$dir")"
+            cd "$dir"
+            npm install
+            cd - > /dev/null
+            echo "::endgroup::"
+          done