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/PackageCQ/Queries/GetUserPackageStatus/GetUserPackageStatusQuery.cs

@@ -0,0 +1,9 @@
+using BackOffice.BFF.Package.Protobuf.Protos.Package;
+using MediatR;
+
+namespace BackOffice.BFF.Application.PackageCQ.Queries.GetUserPackageStatus;
+
+public record GetUserPackageStatusQuery : IRequest<GetUserPackageStatusResponse>
+{
+    public long UserId { get; init; }
+}

src/BackOffice.BFF.Application/PackageCQ/Queries/GetUserPackageStatus/GetUserPackageStatusQueryHandler.cs

@@ -0,0 +1,52 @@
+using BackOffice.BFF.Package.Protobuf.Protos.Package;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+namespace BackOffice.BFF.Application.PackageCQ.Queries.GetUserPackageStatus;
+
+public class GetUserPackageStatusQueryHandler : IRequestHandler<GetUserPackageStatusQuery, GetUserPackageStatusResponse>
+{
+    private readonly PackageContract.PackageContractClient _packageClient;
+    private readonly ILogger<GetUserPackageStatusQueryHandler> _logger;
+
+    public GetUserPackageStatusQueryHandler(
+        PackageContract.PackageContractClient packageClient,
+        ILogger<GetUserPackageStatusQueryHandler> logger)
+    {
+        _packageClient = packageClient;
+        _logger = logger;
+    }
+
+    public async Task<GetUserPackageStatusResponse> Handle(GetUserPackageStatusQuery request, CancellationToken cancellationToken)
+    {
+        // TODO: پیاده‌سازی GetUserPackageStatus
+        // 
+        // 1. ایجاد gRPC Request:
+        //    - var grpcRequest = new CMSMicroservice.Protobuf.Protos.Package.GetUserPackageStatusRequest {
+        //        UserId = request.UserId
+        //      }
+        //
+        // 2. فراخوانی CMS:
+        //    - var response = await _packageClient.GetUserPackageStatusAsync(grpcRequest, cancellationToken: cancellationToken)
+        //
+        // 3. تبدیل به BFF Response:
+        //    - return new GetUserPackageStatusResponse {
+        //        UserId = response.UserId,
+        //        PackagePurchaseMethod = response.PackagePurchaseMethod,
+        //        HasPurchasedPackage = response.HasPurchasedPackage,
+        //        IsClubMemberActive = response.IsClubMemberActive,
+        //        WalletBalance = response.WalletBalance,
+        //        DiscountBalance = response.DiscountBalance,
+        //        CanActivateClubMembership = response.CanActivateClubMembership,
+        //        LastOrderNumber = response.LastOrderNumber,
+        //        LastPurchaseDate = response.LastPurchaseDate
+        //      }
+        //
+        // 4. Log:
+        //    - _logger.LogInformation("Retrieved package status for user {UserId}", request.UserId)
+        //
+        // نکته: این endpoint برای Admin است تا وضعیت کاربران را بررسی کند
+
+        throw new NotImplementedException("GetUserPackageStatus needs implementation");
+    }
+}

src/BackOffice.BFF.Application/PackageCQ/Queries/GetUserPackageStatus/GetUserPackageStatusQueryValidator.cs

@@ -0,0 +1,13 @@
+using FluentValidation;
+
+namespace BackOffice.BFF.Application.PackageCQ.Queries.GetUserPackageStatus;
+
+public class GetUserPackageStatusQueryValidator : AbstractValidator<GetUserPackageStatusQuery>
+{
+    public GetUserPackageStatusQueryValidator()
+    {
+        RuleFor(x => x.UserId)
+            .GreaterThan(0)
+            .WithMessage("شناسه کاربر باید بزرگتر از 0 باشد");
+    }
+}