Changes to Create new user

added the non-success response with the status 409

added the optional property code to the response with the 400 status

added the optional property code to the response with the 401 status

added the optional property code to the response with the 403 status

added the optional property code to the response with the 500 status

the request property first_name became not nullable

the request property last_name became not nullable

the request property first_name became required

the request property last_name became required

api tag User added

api tag Users removed

the address request property's minLength was increased from 0 to 3

api tag Users added

endpoint added

api removed without deprecation