Add badge system based on user impact scores

- Created badge utility with 5 levels (Beginner, Intermediate, Advanced, Expert, Master)
- Badge thresholds: 0, 50, 100, 150, 200 points
- Implemented BadgeDisplay component with progress tracking
- Enhanced user profile statistics boxes with centered layout, gradients, and icons
- Added badge progress section showing advancement to next level
- Badge images reference existing assets in /public folder

src/components/auth/index.ts

@@ -3,4 +3,5 @@ export { UserProfile } from './UserProfile';
 export { SignInPage } from './SignInPage';
 export { SignUpPage } from './SignUpPage';
 export { NotificationSettings } from './NotificationSettings';
+export { BadgeDisplay } from './BadgeDisplay';
 export type { NotificationPreferences, AreaOfInterest } from './NotificationSettings';