feat: 사진 다운로드 로직 구현 및 CDN 설정

[zyovn]

📌 어떤 기능인가요?

• 사진 다운로드 API
  • GET /photos/{photoId}/downloaded-url: 다운로드 presigned url 발급 API
• CDN 설정

📝 작업 상세 내용

• 사진 다운로드 presigned url 발급 API
• CDN 설정

[coderabbitai]

A summary of the changes CodeRabbit can apply:

• Implement photo download capability by adding two APIs (GET /v1/photos/{photoId}/download-url and POST /v1/photos/{photoId}/download-history) and corresponding files: create DownloadHistory.java (entity), DownloadHistoryRepository.java, PhotoDownloadService.java, PhotoDownloadController.java, PhotoDownloadSwagger.java, PhotoDownloadUrlResponse.java; and update PresignedUrlService.java (add generatePresignedGetUrl), PhotoErrorCode.java (add PHOTO_NOT_FOUND, PHOTO_NOT_COMPLETED, PHOTO_DOWNLOAD_URL_GENERATION_FAILED) and SuccessCode.java (add PHOTO_DOWNLOAD_URL_ISSUE_SUCCESS, PHOTO_DOWNLOAD_HISTORY_SAVE_SUCCESS).

• Implement photo download feature: add new PhotoDownloadService, PhotoDownloadController, PhotoDownloadSwagger, PhotoDownloadUrlResponse, DownloadHistory entity and DownloadHistoryRepository; extend PresignedUrlService with generatePresignedGetUrl; update SuccessCode and PhotoErrorCode with download-related codes/messages — resulting in presigned GET URL issuance, download history persistence, and corresponding API endpoints and responses.

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