add user service and update user model for customer details retrieval

lib/data/models/user.dart

@@ -1,27 +1,55 @@
 import 'package:equatable/equatable.dart';
 
 class User extends Equatable {
-  final String id;
-  final String username;
-  final String email;
-  final String? phoneNumber;
+  
+  final String accountNo;
+  final String accountType;
+  final String bookingNumber;
+  final String branchId;
+  final String currency;
+  final String? productType;
+  final String? approvedAmount;
+  final String availableBalance;
+  final String currentBalance;
+  final String name;
+  final String mobileNo;
+  final String address;
+  final String picode;
   
   const User({
-    required this.id,
-    required this.username,
-    required this.email,
-    this.phoneNumber,
+    required this.accountNo,
+    required this.accountType,
+    required this.bookingNumber,
+    required this.branchId,
+    required this.currency,
+    this.productType,
+    this.approvedAmount,
+    required this.availableBalance,
+    required this.currentBalance,
+    required this.name,
+    required this.mobileNo,
+    required this.address,
+    required this.picode,
   });
   
   factory User.fromJson(Map<String, dynamic> json) {
     return User(
-      id: json['id'],
-      username: json['username'],
-      email: json['email'],
-      phoneNumber: json['phone_number'],
+      accountNo: json['stAccountNo'],
+      accountType: json['stAccountType'],
+      bookingNumber: json['stBookingNumber'],
+      branchId: json['stBranchId'],
+      currency: json['stCurrency'],
+      productType: json['stProductType'],
+      approvedAmount: json['stApprovedAmount'],
+      availableBalance: json['stAvailableBalance'],
+      currentBalance: json['stCurrentBalance'],
+      name: json['custname'],
+      mobileNo: json['mobileno'],
+      address: json['custaddress'],
+      picode: json['picode'],
     );
   }
   
   @override
-  List<Object?> get props => [id, username, email, phoneNumber];
+  List<Object?> get props => [accountNo, accountType, bookingNumber, branchId, currency, productType, approvedAmount, availableBalance, currentBalance, name, mobileNo, address, picode];
 }