**docs(readme): add live demo link and update install script in deploy workflow**

### Changes:
- **README.md**: Added a "Live Demo" section with a direct link to the interactive GitHub Pages demo.
- **deploy-demo.yml**: Modified dependency installation step to use `npm install --legacy-peer-deps` for compatibility.

### Purpose:
Improved documentation by providing direct access to the live demo for better user engagement. Updated the deploy workflow to ensure successful dependency resolution during the setup process.

.github/workflows/deploy-demo.yml

@@ -19,7 +19,8 @@ jobs:
           cache: 'npm'
 
       - name: Install dependencies 📦
-        run: npm ci
+        run: npm install --legacy-peer-deps
+
 
       - name: Build project 🏗️
         run: |