Add GitHub Actions workflow for PR previews

Author: mnm-matin

.github/workflows/preview.yml

@@ -0,0 +1,42 @@
+name: PR Preview
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, closed]
+
+permissions:
+  contents: write
+  pull-requests: write
+  pages: write
+  id-token: write
+
+jobs:
+  deploy-preview:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - uses: actions/checkout@v4
+        if: github.event.action != 'closed'
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+        if: github.event.action != 'closed'
+      
+      - name: Install dependencies
+        run: npm ci
+        if: github.event.action != 'closed'
+      
+      - name: Build
+        run: npm run build
+        if: github.event.action != 'closed'
+      
+      - name: Deploy PR Preview
+        uses: rossjrw/pr-preview-action@v1
+        with:
+          source-dir: ./dist
+          preview-branch: gh-pages
+          umbrella-dir: pr-preview
+          action: auto