refactor(api): reorder imports and update code formatting across repository endpoints

- Reordered actix-web imports to standardize import order
- Reordered crate module imports to follow alphabetical ordering
- Updated function calls to use multi-line formatting for better readability
- Standardized blank lines around documentation comments
- Applied consistent formatting to response handling methods
- Normalized import organization across all repository-related API files
- Improved code consistency and maintainability through standardized formatting
- Applied formatting updates to all repository endpoint implementations

api/repo/transfer_owner.rs

@@ -1,8 +1,8 @@
-use actix_web::{web, HttpResponse};
+use actix_web::{HttpResponse, web};
 use serde::Deserialize;
 use utoipa::{IntoParams, ToSchema};
 
-use crate::api::response::{ApiResponse, ApiErrorResponse};
+use crate::api::response::{ApiErrorResponse, ApiResponse};
 use crate::error::AppError;
 use crate::models::repos::Repo;
 use crate::service::AppService;
@@ -26,13 +26,13 @@ pub struct TransferOwnerParams {
 ///
 /// Transfers ownership of a repository to another user. The new owner must be an existing repository member.
 /// Requires Owner role in the repository.
-/// 
+///
 /// Effects:
 /// - Current owner becomes an Admin
 /// - New owner gains full Owner permissions
 /// - Repository URL remains unchanged
 /// - All forks and stars are preserved
-/// 
+///
 /// Returns the updated repository with new owner information.
 #[utoipa::path(
     post,