+source +destination in payments

frontend/pshared/lib/models/payment/endpoint.dart

@@ -0,0 +1,17 @@
+import 'package:pshared/models/payment/methods/data.dart';
+
+class PaymentEndpoint {
+  final PaymentMethodData? method;
+  final String? paymentMethodRef;
+  final String? payeeRef;
+  final String? type;
+  final Map<String, dynamic>? rawData;
+
+  const PaymentEndpoint({
+    required this.method,
+    required this.paymentMethodRef,
+    required this.payeeRef,
+    required this.type,
+    required this.rawData,
+  });
+}

frontend/pshared/lib/models/payment/payment.dart

@@ -1,11 +1,13 @@
+import 'package:pshared/models/payment/endpoint.dart';
 import 'package:pshared/models/payment/execution_operation.dart';
 import 'package:pshared/models/payment/quote/quote.dart';
 import 'package:pshared/models/payment/state.dart';
 
 class Payment {
   final String? paymentRef;
-  final String? idempotencyKey;
   final String? state;
+  final PaymentEndpoint? source;
+  final PaymentEndpoint? destination;
   final PaymentOrchestrationState orchestrationState;
   final String? failureCode;
   final String? failureReason;
@@ -16,8 +18,9 @@ class Payment {
 
   const Payment({
     required this.paymentRef,
-    required this.idempotencyKey,
     required this.state,
+    required this.source,
+    required this.destination,
     required this.orchestrationState,
     required this.failureCode,
     required this.failureReason,