implemented backend wallet service connection

frontend/pshared/lib/data/mapper/wallet/wallet.dart

@@ -0,0 +1,26 @@
+import 'package:pshared/data/dto/wallet/balance.dart';
+import 'package:pshared/data/dto/wallet/wallet.dart';
+import 'package:pshared/data/mapper/wallet/balance.dart';
+import 'package:pshared/data/mapper/wallet/money.dart';
+import 'package:pshared/models/wallet/wallet.dart';
+
+
+extension WalletDTOMapper on WalletDTO {
+  WalletModel toDomain({WalletBalanceDTO? balance}) => WalletModel(
+    walletRef: walletRef,
+    organizationRef: organizationRef,
+    ownerRef: ownerRef,
+    asset: WalletAsset(
+      chain: asset.chain,
+      tokenSymbol: asset.tokenSymbol,
+      contractAddress: asset.contractAddress,
+    ),
+    depositAddress: depositAddress,
+    status: status,
+    metadata: metadata,
+    createdAt: (createdAt == null || createdAt!.isEmpty) ? null : DateTime.tryParse(createdAt!),
+    updatedAt: (updatedAt == null || updatedAt!.isEmpty) ? null : DateTime.tryParse(updatedAt!),
+    balance: balance?.toDomain(),
+    availableMoney: balance?.available?.toDomain(),
+  );
+}