버튼 로딩 상태 및 스피너 컴포넌트 추가

[gwansikk]

Summary

디자인시스템의 버튼에 loading와Spinner 컴포넌트를 추가했습니다.

Tasks

• 버튼에 loading 상태를 추가하여 로딩 상태를 직관적이게 표현하도록 개선했어요.
• Spinner 컴포넌트를 추가했어요.
• vitest deprecated 옵션을 개선했어요.

ETC

Github Actions (CI)에서 test 절차를 추가했어요.

Screenshot

Button Loading	Spinner

[changeset-bot[bot]]

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Latest commit: af80d999a8c02f8d2016950d9f50211c9d407ec1

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