Add contributor leaderboard

Add types, hook, UI components, and integration for leaderboard showing top users with badges

src/integrations/supabase/types.ts

@@ -6829,6 +6829,10 @@ export type Database = {
       }
       generate_ticket_number: { Args: never; Returns: string }
       get_auth0_sub_from_jwt: { Args: never; Returns: string }
+      get_contributor_leaderboard: {
+        Args: { limit_count?: number; time_period?: string }
+        Returns: Json
+      }
       get_current_user_id: { Args: never; Returns: string }
       get_database_statistics: { Args: never; Returns: Json }
       get_email_change_status: { Args: never; Returns: Json }