[task] client / feature / function page_addContentsComponent

### ISSUE
- Group:  `client`
- Type: `feature`
- Detail:create function page_ addContentsComponent

### TODO
1. [ ] 섹션 나누기
2. [ ] css 작성
3. [ ] 기능 구현

### Estimated time
> 
### `1h`


### Labels
- Estimated time: `E: 1h`
- Group : `client`
- Sprint: `Sprint__2__`
- Urgency: `Low`
