feat: add manual membership payment processing with wallet and order management

src/CMSMicroservice.Protobuf/Protos/manualpayment.proto

@@ -38,6 +38,13 @@ service ManualPaymentContract
             get: "/GetAllManualPayments"
         };
     };
+
+    rpc ProcessManualMembershipPayment(ProcessManualMembershipPaymentRequest) returns (ProcessManualMembershipPaymentResponse){
+        option (google.api.http) = {
+            post: "/ProcessManualMembershipPayment"
+            body: "*"
+        };
+    };
 }
 
 // Enums mirroring CMSMicroservice.Domain.Enums.ManualPaymentType
@@ -128,3 +135,20 @@ message ManualPaymentModel
     google.protobuf.Timestamp created = 19;
 }
 
+message ProcessManualMembershipPaymentRequest
+{
+    int64 user_id = 1;
+    int64 amount = 2;
+    string reference_number = 3;
+    google.protobuf.StringValue description = 4;
+    int64 admin_user_id = 5;
+}
+
+message ProcessManualMembershipPaymentResponse
+{
+    int64 transaction_id = 1;
+    int64 order_id = 2;
+    int64 new_wallet_balance = 3;
+    string message = 4;
+}
+