add gh workflow

.github/workflows/build.yml

@@ -0,0 +1,40 @@
+name: Build validation
+
+on:
+  push:
+    branches: [ "main", "develop" ]
+  pull_request:
+    branches: [ "main", "develop" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x, 22.x]
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm i
+    - run: npm run build
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js 22
+      uses: actions/setup-node@v4
+      with:
+        node-version: 22
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm i
+    # Lint currently reporting lots of preexisting issues
+    # - run: npm run lint