[Task] 회원정보 조회, 로그아웃 api 구현

### ISSUE
- Group: `server`
- Type: `feature`
- Detail: 회원정보 조회, 로그아웃 api 구현

### TODO
1. [x] 회원정보 조회 controller 작성
2. [x] 로그아웃 controller 작성
3. [x] postman을 통한 테스트 진행

### Estimated time
### `3h`

Start in the server group and review the existing member-information lookup and logout controllers mentioned in the TODO list. Run the Postman tests described by the issue; the work is done when both APIs behave as intended and those tests pass.

Written by the indexing model from the issue text.