파일서버 파일 업로드 및 저장 구현

[mirlee0304]

Pull request

Related issue

#120

Motivation and context

청크 없이 파일 서버의 역할 중 파일 s3 저장, 파일 db 저장, 요청 응답 로직 구현

Solution

How has this been tested

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.