feat: add base package payment initiation and verification

src/Protobufs/FrontOffice.BFF.Package.Protobuf/Protos/package.proto

@@ -24,6 +24,21 @@ service PackageContract
             
         };
     };
+    
+    // Base Package Payment (56M پکیج پایه)
+    rpc InitiateBasePackagePayment(InitiateBasePackagePaymentRequest) returns (InitiateBasePackagePaymentResponse){
+        option (google.api.http) = {
+            post: "/InitiateBasePackagePayment"
+            body: "*"
+        };
+    };
+    
+    rpc VerifyBasePackagePayment(VerifyBasePackagePaymentRequest) returns (VerifyBasePackagePaymentResponse){
+        option (google.api.http) = {
+            post: "/VerifyBasePackagePayment"
+            body: "*"
+        };
+    };
 }
 message GetPackageRequest
 {
@@ -92,3 +107,43 @@ message DecimalValue
 
     sfixed32 nanos = 2;
 }
+
+// Base Package Payment Messages
+
+// درخواست پرداخت پکیج پایه
+// UserId از CurrentUserService گرفته می‌شود
+message InitiateBasePackagePaymentRequest
+{
+    string callback_url = 1;
+}
+
+message InitiateBasePackagePaymentResponse
+{
+    bool success = 1;
+    string message = 2;
+    int64 order_id = 3;
+    int64 transaction_id = 4;
+    int64 amount = 5;
+    string payment_gateway_url = 6;
+    string authority = 7;
+}
+
+// تأیید پرداخت پکیج پایه (بعد از بازگشت از درگاه)
+message VerifyBasePackagePaymentRequest
+{
+    int64 order_id = 1;
+    int64 transaction_id = 2;
+    string authority = 3;
+    string status = 4;
+}
+
+message VerifyBasePackagePaymentResponse
+{
+    bool success = 1;
+    string message = 2;
+    int64 order_id = 3;
+    int64 transaction_id = 4;
+    google.protobuf.StringValue ref_id = 5;
+    int64 wallet_balance = 6;
+    int64 discount_balance = 7;
+}