feat/auto-backup

[89645321]

PR Title: feat/auto-backup

Related Issue(s):

PR Description:

자동 백업 구현하였습니다. isAuthorized가 확인되었을 때 (게스트 모드 아님 && lastBackupDate가 오늘이 아님 && 로그인 직후 아님 && 설정에 자동 백업이 켜져있음)을 만족하면 autobackup 후 homescreen으로 넘깁니다.

Changes Included:

• Added new feature(s)
• Fixed identified bug(s)
• Updated relevant documentation

Notes for Reviewer:

Reviewer Checklist:

• Code is written in clean, maintainable, and idiomatic form.
• Automated test coverage is adequate.
• All existing tests pass.
• Manual testing has been performed to ensure the PR works as expected.
• Code review comments have been addressed or clarified.

Additional Comments:

[yjeong-k]

getLastBackupDate() != LocalDate.now().toString() 부분만 주석처리해보고 돌려서
자동백업 잘 뜨고 잘 되는 거 확인하였습니다!!
고생하셨습니다 감사합니다☺️☺️