feat: Implement file management and authorization features

- Add RequiresPermissionAttribute for gRPC method access control.
- Create IFileManagementService interface for file upload and management.
- Implement AddProductImageCommand and handler for adding product images.
- Implement CreateNewProductsCommand and handler for creating new products with image uploads.
- Implement DeleteProductsCommand and handler for deleting products and their associations.
- Implement RemoveProductImageCommand and handler for removing product images from galleries.
- Implement UpdateProductsCommand and handler for updating product details and images.
- Create GetProductGalleryQuery and handler for retrieving product galleries.
- Implement PermissionService for role-based access control using JWT claims.
- Implement FileManagementService for handling file uploads and image optimization.
- Define gRPC service and messages for file management in fms.proto.
- Add FluentValidation for request validation in various commands.
- Create PermissionInterceptor for enforcing permissions on gRPC methods.

src/CMSMicroservice.WebApi/Program.cs

@@ -64,6 +64,7 @@ builder.Services.AddGrpc(options =>
 {
     options.Interceptors.Add<LoggingBehaviour>();
     options.Interceptors.Add<PerformanceBehaviour>();
+    options.Interceptors.Add<CMSMicroservice.WebApi.Interceptors.PermissionInterceptor>();
     //options.Interceptors.Add<ExceptionHandlingBehaviour>();
     options.EnableDetailedErrors = true;
     options.MaxReceiveMessageSize = 1000 * 1024 * 1024; // 1 GB
@@ -339,6 +340,7 @@ app.UseGrpcWeb(new GrpcWebOptions { DefaultEnabled = true }); // Configure the H
 
 // Map SignalR Hub for token notifications
 app.MapHub<TokenNotificationHub>("/hubs/token-notification");
+app.MapHub<TokenNotificationHub>("/hubs/token-relay"); // Alias for FrontOffice backward compatibility
 
 app.ConfigureGrpcEndpoints(Assembly.GetExecutingAssembly(), endpoints =>
 {