Add CI workflow

Author: Victoria-DR

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version-file: .nvmrc
+        cache: 'npm'
+    
+    - name: Compile TypeScript
+      run: npx tsc --build