Create Sign Up and Sign In Pages

[qisforq]

Objective:

Develop the Sign Up and Sign In pages based on the Figma mockup.

Tasks:

• [x] Create a new component for the Sign Up page.
• [x] Create a new component for the Sign In page.
• [x] Implement the necessary form fields for user registration, such as email, password, and any additional required information.
• [x] Add form validation to ensure data integrity and provide user feedback for invalid inputs.
  • [x] Create dummy functionality for sign-up and login processes for now, which can be replaced with the chosen authentication method next sprint (#170)
  • [x] Add form validation and error handling for invalid login attempts.