Add CI

Author: stephank

.github/workflows/check.yml

@@ -0,0 +1,16 @@
+on: [push, pull_request]
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+        with:
+          node-version: "24.11.1"
+          cache: "npm"
+
+      - name: Check
+        run: npm ci