Email verification while regstration

[Salim-54]

Implement an email verification feature during user registration to ensure that users provide valid email addresses and to enhance account security.

Key tasks:

1. Generate a unique verification token for each registration request after the user submits the registration form.
2. Store the token securely in the database along with the user’s information and set an expiration time for the token (e.g., 3 hours).

Acceptance Criteria:

1. Users receive a verification email upon registration.
2. Users can successfully verify their email address using the provided link.
3. The system handles expired or invalid tokens gracefully with appropriate messages.
4. All security measures are implemented to protect user data and prevent abuse