Add github workflows

Author: eacet

.github/workflows/ci.yml

@@ -0,0 +1,15 @@
+name: CI
+
+on: pull_request
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+      - run: npm ci --unsafe-perm
+      - run: npm run build
+      - run: npm test