implemented TPIN and quick pay within bank

lib/data/models/payment_response.dart

@@ -0,0 +1,19 @@
+class PaymentResponse {
+  final bool isSuccess;
+  final DateTime? date;
+  final String? creditedAccount;
+  final String? amount;
+  final String? currency;
+  final String? errorMessage;
+  final String? errorCode;
+
+  PaymentResponse({
+    required this.isSuccess,
+    this.date,
+    this.creditedAccount,
+    this.amount,
+    this.currency,
+    this.errorMessage,
+    this.errorCode,
+  });
+}

lib/data/models/transaction.dart

@@ -2,7 +2,7 @@ class Transaction {
   final String? id;
   final String? name;
   final String? date;
-  final int? amount;
+  final String? amount;
   final String? type;
 
   Transaction({this.id, this.name, this.date, this.amount, this.type});
@@ -21,7 +21,7 @@ class Transaction {
       id: json['id'] as String?,
       name: json['name'] as String?,
       date: json['date'] as String?,
-      amount: json['amount'] as int?,
+      amount: json['amount'] as String?,
       type: json['type'] as String?,
     );
   }

lib/data/models/transfer.dart

@@ -0,0 +1,45 @@
+class Transfer {
+  final String fromAccount;
+  final String toAccount;
+  final String toAccountType;
+  final String amount;
+  String? tpin;
+
+  Transfer({
+    required this.fromAccount,
+    required this.toAccount,
+    required this.toAccountType,
+    required this.amount,
+    this.tpin,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'fromAccount': fromAccount,
+      'toAccount': toAccount,
+      'toAccountType': toAccountType,
+      'amount': amount,
+      'tpin': tpin,
+    };
+  }
+}
+
+class TransferResponse {
+  final String? status;
+  final String? message;
+  final String? error;
+
+  TransferResponse({
+    required this.status,
+    required this.message,
+    required this.error,  
+  });
+
+  factory TransferResponse.fromJson(Map<String, dynamic> json) {
+    return TransferResponse(
+      status: json['status'] as String?,
+      message: json['message'] as String?,
+      error: json['error'] as String?,
+    );
+  }
+}