core(CI/CD): Add github action to auto deploy demo app

Author: immohammadjaved

.github/workflows/deploy.yml

@@ -0,0 +1,63 @@
+name: Deploy Demo to GitHub Pages
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+      
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+        cache: 'npm'
+        
+    - name: Install dependencies
+      run: npm ci
+      
+    - name: Build demo app
+      run: npm run build:demo
+      
+    - name: Add .nojekyll file
+      run: touch dist/demo/browser/.nojekyll
+      
+    - name: Add 404.html for SPA routing
+      run: cp dist/demo/browser/index.html dist/demo/browser/404.html
+      
+    - name: Setup Pages
+      uses: actions/configure-pages@v4
+      
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v3
+      with:
+        path: './dist/demo/browser'
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/main'
+    
+    steps:
+    - name: Deploy to GitHub Pages
+      id: deployment
+      uses: actions/deploy-pages@v4 

README.md

@@ -6,6 +6,8 @@
 
 > **Modern Theme Management for Angular** - A lightweight, feature-rich theme library with automatic dark mode detection, SSR support, and zero configuration required.
 
+**🌐 [Live Demo](https://angularcafe.github.io/angularui-theme/)**
+
 ## 🌟 Features
 
 - **🎨 Automatic Theme Detection** - Supports light, dark, and system themes with OS preference detection

package.json

@@ -5,6 +5,7 @@
     "ng": "ng",
     "start": "ng serve",
     "build": "ng build",
+    "build:demo": "ng build demo --configuration production --base-href /angularui-theme/",
     "watch": "ng build --watch --configuration development",
     "test": "ng test"
   },