Changes to Begin enrolling a new factor for MFA.

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

added the new webauthn enum value to the type response property for the response status 200

added the new webauthn enum value to the request property factor_type

added the new phone enum value to the type response property for the response status 200

added the new optional request property phone

added the new phone enum value to the request property factor_type

added the optional property phone to the response with the 200 status

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

removed the enum value phone of the request property factor_type

removed the enum value webauthn of the request property factor_type

removed the request property phone

removed the optional property error_code from the response with the 400 status

removed the optional property phone from the response with the 200 status

removed the optional property weak_password from the response with the 400 status

removed the phone enum value from the type response property for the response status 200

removed the webauthn enum value from the type response property for the response status 200