Add CI lockfile hygiene gate

.github/workflows/ci.yml

@@ -0,0 +1,20 @@
+name: vm-cloud CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  node:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+          cache-dependency-path: package-lock.json
+      - run: npm ci
+      - run: npm run build --if-present
+      - run: npm test --if-present
+      - run: npm run lint --if-present