Add CI for tests (#2)

Author: nilsreichardt

.github/workflows/ci.yml

@@ -0,0 +1,14 @@
+name: ci
+
+on:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 16
+      - run: npm run test