add: ユーザー取得APIを追加して登録時の存在確認を修正#8

sana-sagegami merged 5 commits into

mainSystemEngineeringTeam/sysken-pay:mainfrom

feature/add-user-get-endpointSystemEngineeringTeam/sysken-pay:feature/add-user-get-endpointCopy head branch name to clipboard