Add GitHub Actions workflow for automated testing on push and pull request

Author: hawkeyexl

.github/workflows/test.yml

@@ -0,0 +1,23 @@
+name: Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    types: [ opened, synchronize ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+        
+    - name: Install dependencies
+      run: npm ci
+      
+    - name: Run tests
+      run: npm test