• GET /study-logs/stats/monthly?month=2023-06

→ 내일 만나서 얘기해보기

• ~~GET /study-logs?date=2023-12-11 기존대로~~

• ~~GET /mates/{following_id}/stats?date=2023-12-11~~

• ~~GET /mates?date=2023-12-11~~

• GET /study-logs/stats?date=2023-12-11

• GET /study-logs/stats/weekly?date=2023-12-11