refactor: 입력 형식과 관련된 검증은 Dto 내부에서 하게 한다.#187

Gyuhyeok99 merged 8 commits intomainsolid-connection/solid-connect-server:mainfrom

refactor/182-move-validation-to-dtosolid-connection/solid-connect-server:refactor/182-move-validation-to-dtoCopy head branch name to clipboard