Refactor Login component

Splits the Login component into smaller, more manageable parts and extracts related logic into hooks to improve code organization and readability.

src/contexts/AuthContext.tsx

@@ -1,4 +1,2 @@
 
-import { AuthProvider, useAuth } from './auth';
-
-export { AuthProvider, useAuth };
+export { AuthProvider, useAuth } from '@/contexts/auth';