feat: Implement user permission checks and manual payment functionalities

- Added CheckUserPermissionQuery and CheckUserPermissionQueryHandler for permission validation.
- Introduced GetUserRolesQuery and GetUserRolesQueryHandler to retrieve user roles.
- Created IPermissionService interface and its implementation in PermissionService.
- Defined permission and role constants in PermissionDefinitions.
- Developed SetDefaultVatPercentageCommand and its handler for VAT configuration.
- Implemented GetCurrentVatPercentageQuery and handler to fetch current VAT settings.
- Added manual payment commands: CreateManualPayment, ApproveManualPayment, and RejectManualPayment with respective handlers and validators.
- Created GetManualPaymentsQuery and handler for retrieving manual payment records.
- Integrated gRPC services for manual payments with appropriate permission checks.
- Established Protobuf definitions for manual payment operations and metadata.

src/Protobufs/BackOffice.BFF.UserOrder.Protobuf/Protos/userorder.proto

@@ -165,6 +165,11 @@ message GetUserOrderResponse
     {
         PaymentMethod payment_method = 16;
     }
+    // اطلاعات مالیات بر ارزش افزوده
+    int64 vat_amount = 17;
+    double vat_percentage = 18;
+    int64 vat_base_amount = 19;
+    int64 vat_total_amount = 20;
 }
 message GetAllUserOrderByFilterRequest
 {
@@ -226,6 +231,9 @@ message GetAllUserOrderByFilterResponseModel
     {
         PaymentMethod payment_method = 15;
     }
+    // مبلغ و درصد مالیات بر ارزش افزوده
+    int64 vat_amount = 16;
+    double vat_percentage = 17;
 }
 
 // جزئیات فاکتور سفارش