feat: Implement file upload functionality with MinIO integration

- Added new dependencies for HMAC, hex, and urlencoding in Cargo.toml.
- Introduced FileUploadSchema for handling multipart file uploads.
- Enhanced UsersService with upload_file method to handle file uploads to MinIO.
- Implemented MinioService for managing MinIO interactions, including file uploads and presigned URL generation.
- Updated environment configuration to include MinIO region and secure settings.
- Added validation for file types and sizes during upload.
- Improved error handling and logging for file upload processes.
- Created utility functions for base64 decoding and content type extraction.

Cargo.toml

@@ -51,6 +51,9 @@ strum = { version = "0.27.1", features = ["derive"] }
 strum_macros = "0.27.1"
 base64 = "0.22.1"
 sha2 = "0.10.8"
+hmac = "0.12"
+hex = "0.4"
+urlencoding = "2.1"
 hyper = "1.6.0"
 hyper-util = "0.1.0"
 minio = "0.1.0"