[Feat] amplitude 허수 판독기

[eonseok-jeon]

Related Issue : Closes #344

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🧑‍🎤 Summary

• 회원가입 완료 시, 지원서 제출 완료 시 amplitude event tracking 되도록 구현

🧑‍🎤 Comment

tanstack query의 onSuccess 이용해줬어요

sign-up 버튼 클릭 -> click-signup-apply
sign-up 완료 -> done-signup-apply

지원서 최종 제출 버튼 클릭 -> click-apply-confirm_submit
지원서 최종 제출 완료 -> done-apply-confirm_submit

[height]

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[lydiacho]

감사합니두~~!!!