Changes to Register a new user

the endpoint scheme security BearerAuth was added to the API

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the new optional request property team_id

added the required property user/is_admin to the response with the 201 status

added the required property user/is_verified to the response with the 201 status