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/Commands/UpdateOrderStatus/UpdateOrderStatusCommand.cs

@@ -0,0 +1,10 @@
+using BackOffice.BFF.UserOrder.Protobuf.Protos.UserOrder;
+using MediatR;
+
+namespace BackOffice.BFF.Application.UserOrderCQ.Commands.UpdateOrderStatus;
+
+public record UpdateOrderStatusCommand : IRequest<UpdateOrderStatusResponse>
+{
+    public long OrderId { get; init; }
+    public int NewStatus { get; init; }
+}