차트 기능 추가하였습니다.

## 목적

## 작업 상세 내용
차트 기능 추가하였습니다.
## Reference

The issue only states '차트 기능 추가하였습니다' (chart function added) without specifying what chart, where, or how. Look for existing chart-related code or UI components in the C++ project. Determine what data needs to be visualized and where the chart should be integrated. Check if there are any references to plotting libraries or graphical output in the codebase.

索引モデルが issue の本文から書いたものです。