Refactor input handling and validation in Login component

Refactor validation logic in StateLogin component

Refactor input fields and add validation logic

Replace Login component with Signup and add input validation

Add email validation to Login component

Add blur validation to email field in StateLogin component

Replace Signup component with StateLogin and add validation

Replace Login component with Signup component

Implement useRef for form inputs and add state management

Add state management to Login component

Add submit handler to Login component

Add initial project setup and basic components

Initial commit