feat: Add Protobuf definitions for Network Membership service

- Introduced `networkmembership.proto` with RPC methods for retrieving user network tree, statistics, and position.
- Implemented HTTP annotations for gRPC transcoding in the service methods.
- Added support for Google API annotations in `annotations.proto` and `http.proto`.
- Created `ConfigureServices.cs` to register FluentValidation for the Protobuf services.
- Updated project file to include necessary dependencies for gRPC and Protobuf.

src/FrontOffice.BFF.Application/CommissionCQ/Queries/GetMyWeeklyBalances/GetMyWeeklyBalancesResponseDto.cs

@@ -79,4 +79,9 @@ public class WeeklyBalanceItemDto
     /// آیا منقضی شده؟
     /// </summary>
     public bool IsExpired { get; set; }
+
+    /// <summary>
+    /// تاریخ شمسی
+    /// </summary>
+    public string DatePersian { get; set; } = string.Empty;
 }