Add workflow for verifying and previewing PR

Author: leonard84

.github/workflows/verify.yaml

@@ -0,0 +1,30 @@
+name: Verify PR build
+
+on:
+    pull_request:
+        branches: [ 'main' ]
+
+concurrency:
+    group: '${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}'
+    cancel-in-progress: true
+
+jobs:
+    verify:
+        runs-on: ubuntu-latest
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v4
+            -   name: Set up Node
+                uses: actions/setup-node@v4
+                with:
+                    node-version: lts/*
+                    cache: 'npm'
+            -   name: Install dependencies
+                run: npm ci
+            -   name: Build
+                run: npm run build
+            -   name: Upload artifact
+                uses: 'actions/upload-artifact@v4'
+                with:
+                    name: 'gh-pages-preview'
+                    path: './spock-website/dist'