[#394] Refactor: 채팅 목록 조회 API N+1 문제 해결 및 성능 개선#413

kanado5385-k merged 6 commits intodevelop100-hours-a-week/2-hertz-be:developfrom

fix/get-channel-list-api-N+1-problem100-hours-a-week/2-hertz-be:fix/get-channel-list-api-N+1-problemCopy head branch name to clipboard