Implement User Registration API

[delucca]

Type of Issue

Feature Request

Description

Develop an API endpoint that allows new users to register. The registration flow should include input validation, secure password hashing, and storing user information in the database.

Additional Context

The user registration process should validate input (e.g., email, password strength) and store data securely, ensuring hashed passwords with a strong encryption algorithm like bcrypt.

Acceptance Criteria

1. User registration endpoint is implemented.
2. Input validation is included (email, password strength).
3. Passwords are securely hashed before storing.
4. Successful registrations store user information in the database.