changed color theme to be black and added the ability to enter the amount in the recipient’s currency

frontend/pshared/lib/data/dto/payment/network_fee.dart

@@ -0,0 +1,20 @@
+import 'package:json_annotation/json_annotation.dart';
+
+import 'package:pshared/data/dto/money.dart';
+
+part 'network_fee.g.dart';
+
+
+@JsonSerializable()
+class NetworkFeeDTO {
+  final MoneyDTO? networkFee;
+  final String? estimationContext;
+
+  const NetworkFeeDTO({
+    this.networkFee,
+    this.estimationContext,
+  });
+
+  factory NetworkFeeDTO.fromJson(Map<String, dynamic> json) => _$NetworkFeeDTOFromJson(json);
+  Map<String, dynamic> toJson() => _$NetworkFeeDTOToJson(this);
+}