refactor: 모집글 예외 처리 및 응답 포맷 통일#54

ehddms0320 wants to merge 2 commits intorecruitment-service/mainGC-Project-Space/Delivery-Server:recruitment-service/mainfrom

recruiment-service/devGC-Project-Space/Delivery-Server:recruiment-service/devCopy head branch name to clipboard