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.

imphnen-iam/src/v1/users/users_controller.rs

@@ -7,12 +7,22 @@ use axum::extract::{Path, Multipart};
 use axum::http::HeaderMap;
 use axum::response::IntoResponse;
 use axum::{Extension, Json};
+use utoipa::ToSchema;
+use serde::{Deserialize, Serialize};
 
 use super::{
 	UsersActiveInactiveRequestDto, UsersListItemDto, UsersUpdateRequestDto,
 };
 use crate::v1::users::users_service::{UsersServiceTrait, UsersService};
 
+#[derive(Serialize, Deserialize, ToSchema)]
+#[schema(description = "File upload form data for multipart/form-data")]
+pub struct FileUploadSchema {
+    /// Binary file data to upload
+    #[schema(format = "binary")]
+    pub file: String,
+}
+
 #[utoipa::path(
 	get,
 	security(
@@ -254,7 +264,11 @@ pub async fn delete_user(
         ("Bearer" = [])
     ),
 	path = "/v1/users/upload",
-	request_body(content = String, description = "Upload file", content_type = "multipart/form-data"),
+	request_body(
+		content = FileUploadSchema,
+		description = "Upload file with multipart form data. Only 'file' field is required - file type will be detected automatically from the uploaded file.",
+		content_type = "multipart/form-data"
+	),
 	responses(
 		(status = 200, description = "Upload file successfully", body = ResponseSuccessDto<serde_json::Value>),
 		(status = 400, description = "Bad request"),