feat: Add race upload functionality and file transfer endpoints

- Implemented IRaceUploadCommunicationClient with methods for saving races, creating race points, indexing race points, retrieving race details, and uploading files to the receiver.
- Added ReceiveFilePath option to CatalogCommunicationOptions for file transfer configuration.
- Enhanced CatalogCommunicationServiceCollectionExtensions to validate ReceiveFilePath.
- Developed RaceUploadCommunicationClient to handle race-related API interactions, including saving race data and uploading processed images.
- Updated API documentation to reflect new race upload and file transfer endpoints.
- Modified Avalonia UI to support race creation and processed image uploads, including new input fields and buttons.
- Introduced RaceSaveRequest and ReceiveFileUploadRequest models for structured data handling.

Catalog.Communication/CatalogCommunicationOptions.cs

@@ -6,6 +6,8 @@ public sealed class CatalogCommunicationOptions
 
     public string AdminPageBasePath { get; set; } = "admin/pg";
 
+    public string ReceiveFilePath { get; set; } = "ReceiveFile.abl";
+
     public TimeSpan RequestTimeout { get; set; } = TimeSpan.FromSeconds(30);
 
     public int RetryCount { get; set; } = 2;