드롭다운 메뉴 구현

[handje]

Pull request

Related issue

Resolve #104 @handje

Motivation and context

1. 주식 리스트에 사용할 드롭다운 메뉴 디자인시스템 구현

Solution

1. shadcn 드롭다운 메뉴 사용
2. 사용될 수 있는 체크박스, 서브메뉴, sepearate 예시로 문서화

How has this been tested

위에서 3가지 (panel)까지는 체크박스 아래는 단순선택 list 입니다.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the docs/CONTRIBUTING.md document.
• I have added tests to cover my changes.
• All new and existing tests passed.

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[KimKyuHoi]

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