feat: Implement User Package Status and User Order Management features

- Added GetUserPackageStatus functionality with mapping and service implementation.
- Introduced UserOrder service methods for updating order status, applying discounts, and calculating order PV.
- Created Protobuf definitions for public messages and user orders, including necessary request and response messages.
- Implemented mapping profiles for package and user order related queries and commands.
- Developed query handlers and validators for new commands and queries in the application layer.
- Established PublicMessage service for handling public messages with appropriate gRPC endpoints.

src/BackOffice.BFF.Application/UserOrderCQ/Queries/CalculateOrderPV/CalculateOrderPVQueryHandler.cs

@@ -0,0 +1,23 @@
+using CMSMicroservice.Protobuf.Protos.UserOrder;
+using MediatR;
+using UserOrderContract = BackOffice.BFF.UserOrder.Protobuf.Protos.UserOrder.UserOrderContract;
+
+namespace BackOffice.BFF.Application.UserOrderCQ.Queries.CalculateOrderPV;
+
+public class CalculateOrderPVQueryHandler : IRequestHandler<CalculateOrderPVQuery, CalculateOrderPVResponse>
+{
+    private readonly UserOrderContract.UserOrderContractClient _orderClient;
+
+    public CalculateOrderPVQueryHandler(UserOrderContract.UserOrderContractClient orderClient)
+    {
+        _orderClient = orderClient;
+    }
+
+    public async Task<CalculateOrderPVResponse> Handle(CalculateOrderPVQuery request, CancellationToken cancellationToken)
+    {
+        // TODO: پیاده‌سازی CalculateOrderPV
+        // 1. ایجاد gRPC Request و فراخوانی CMS
+        // 2. return response از CMS
+        throw new NotImplementedException("CalculateOrderPV needs implementation");
+    }
+}