Changes to 알림톡 메시지 발송

request body became required

added MessageReservationDto to the reservation request property allOf list

the reservation request property type changed from object to no type

removed the media type application/json for the response with the status 400

removed the media type application/json for the response with the status 401

removed the media type application/json for the response with the status 403

removed the media type application/json for the response with the status 404

removed the media type application/json for the response with the status 429

removed the media type application/json for the response with the status 500

the data response's property type changed from object to no type for status 200

removed the required property data/groupId from the response with the 200 status

removed the request property reservation/dateTime

api operation id sendAlimTalk removed and replaced with MessageController_sendAlimTalk

the endpoint scheme security basic was added to the API

added MessageSendResultDto to the data response property allOf list for the response status 200

the response property message became required for the status 200

the message response's property default value 성공 was removed for the status 200

removed the 200.00 enum value from the code response property for the response status 200