Create Login Screen and Register Screen

[gulsensabak]

Overview

This pull request includes the creation of the Login Screen, Register Screen and needed components for those screens.

Changes Made

1. Login Screen

• A LoginScreen component has been created.
• Contains input fields for Email and Password, along with a Login button.
• A Register link is also included to navigate users to the registration page.
• A Forgot Password link has been added, allowing users to recover their password.

2. Register Screen

• A RegisterScreen component has been created.
• Input fields for Email, Name, Surname, and Password are provided to allow users to sign up.
• Includes a Sign Up button for registration.
• Contains a Sign In link to navigate users back to the login page if they already have an account.