내 작성글 페이지 구현

### ISSUE
- Group: `client`
- Type: `feature`
- Detail:

### TODO
- [x] 태그 짜기
- [x] 내 작성글 axois.get 작성

### Estimated time
>시간을 수정하세요
`2h`

### Labels
- Estimated time: `E: 2h`
- Group : `client`
- Sprint: Sprint__4__
- Urgency: `High`, `Middle`, `Low`

The issue names the client group but does not identify files, tests, an entry point, or acceptance criteria. Start by locating the client-side page for the user's authored posts and review the existing tag markup and Axios request mentioned in the completed TODOs. Confirm the page displays the current user's posts as intended and add or update tests if the project provides them.

Written by the indexing model from the issue text.