Add build workflow

.github/workflows/build.yml

@@ -0,0 +1,19 @@
+name: Build
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: ".nvmrc"
+      - name: Install dependencies
+        run: |
+          npm ci
+      - name: Run build
+        run: |
+          npm run build