feat: Add Chart Trading page to main navigation menu

Added Chart Trading link to navigation:
- New navigation item with 📈 icon for advanced chart trading
- Positioned between Trading and Automation in the menu
- Links to /chart-trading-demo route
- Maintains consistent styling with other nav items
- Provides access to Jupiter-style trading interface

Users can now easily access the advanced chart trading page from the main menu.

components/Navigation.tsx

@@ -22,6 +22,12 @@ const navItems = [
     icon: '💰',
     description: 'Execute trades'
   },
+  {
+    name: 'Chart Trading',
+    href: '/chart-trading-demo',
+    icon: '📈',
+    description: 'Advanced chart trading'
+  },
   {
     name: 'Automation',
     href: '/automation',