feat: 파일 업로드 기능 구현

[yechan-kim]

1. 무슨 이유로 코드를 변경했나요?

OCI Object Storage를 이용한 파일 업로드 기능을 구현합니다.

2. 어떤 위험이나 장애를 발견했나요?

3. 관련 스크린샷을 첨부해주세요.

4. 완료 사항

• OCI Object Storage를 이용한 파일 업로드 기능 구현

5. 추가 사항

• 파일 이름을 기반으로 버킷 주소를 반환하는 유틸성 기능을 미리 만들어뒀습니다. 추후에 관련 기능을 구현하실 때 참고하시기 바랍니다.
• 인프라 관련된 사항은 추후에 작업하여 comment에 추가하도록 하겠습니다.

[Copilot]

Pull request overview

This PR implements file upload functionality using OCI Object Storage through pre-authenticated URLs. The implementation allows clients to request temporary upload URLs with a 15-minute expiration time, enabling direct file uploads to OCI without exposing permanent credentials.

• Added OCI Object Storage client configuration with authentication setup
• Implemented pre-authenticated URL generation with unique file naming
• Created utility function for retrieving object URLs from bucket
• Secured the new endpoint with user role authorization

Reviewed changes

Copilot reviewed 10 out of 12 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
build.gradle.kts	Added OCI SDK dependencies for Object Storage integration
.gitignore	Excluded private key files (.pem) from version control
src/main/resources/application.yml	Added OCI configuration properties for tenant, user, region, and bucket settings
src/main/kotlin/land/leets/global/config/OciConfig.kt	Configured OCI ObjectStorage client bean with authentication provider
src/main/kotlin/land/leets/global/config/SecurityConfig.kt	Added authorization rule for the pre-authenticated URL endpoint
src/main/kotlin/land/leets/domain/storage/usecase/GetPreAuthenticatedUrl.kt	Defined interface for pre-authenticated URL generation use case
src/main/kotlin/land/leets/domain/storage/usecase/GetPreAuthenticatedUrlImpl.kt	Implemented pre-authenticated URL generation with UUID-based unique file naming
src/main/kotlin/land/leets/domain/storage/usecase/GetObjectUrl.kt	Defined interface for object URL retrieval utility
src/main/kotlin/land/leets/domain/storage/usecase/GetObjectUrlImpl.kt	Implemented object URL construction from file name
src/main/kotlin/land/leets/domain/storage/presentation/dto/PreAuthenticatedUrlResponse.kt	Created response DTO for pre-authenticated URL
src/main/kotlin/land/leets/domain/storage/presentation/StorageController.kt	Exposed POST endpoint for pre-authenticated URL generation
src/test/kotlin/land/leets/domain/storage/usecase/GetPreAuthenticatedUrlImplTest.kt	Added unit tests for pre-authenticated URL generation

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[jwnnoh]

고생하셨어요! 코멘트 참고 부탁드려요 ㅎㅎ

[rootTiket]

고생하셨습니다~ 코멘트 한번 읽어주시면 감사할 것 같아요 :)

[jwnnoh]

상수 위치만 변경하면 될 것 같아요~!

[rootTiket]

고생하셧습니다~