FetchUser - Gets the user ID from auth token and returns that user form the DB.

LoginHandler - Handler function for the login route.

RegistrationHandler - Encrypts the new users password and stores user details in the DB.

TokenValidator - gin middleware function to validate the jwt tokens in the incoming requests.

ORM - Global ORM object for the handler package.

LoginRequest - Login JSON request format.

RegistrationRequest - Registration request parameter format.