added wallet source to quotation preparation

frontend/pshared/lib/models/wallet/asset.dart

@@ -0,0 +1,14 @@
+import 'package:pshared/models/payment/chain_network.dart';
+
+
+class WalletAsset {
+  final ChainNetwork chain;
+  final String tokenSymbol;
+  final String contractAddress;
+
+  const WalletAsset({
+    required this.chain,
+    required this.tokenSymbol,
+    required this.contractAddress,
+  });
+}

frontend/pshared/lib/models/wallet/wallet.dart

@@ -1,21 +1,9 @@
 import 'package:pshared/models/describable.dart';
-import 'package:pshared/models/payment/chain_network.dart';
+import 'package:pshared/models/wallet/asset.dart';
 import 'package:pshared/models/wallet/balance.dart';
 import 'package:pshared/models/wallet/money.dart';
 
 
-class WalletAsset {
-  final ChainNetwork chain;
-  final String tokenSymbol;
-  final String contractAddress;
-
-  const WalletAsset({
-    required this.chain,
-    required this.tokenSymbol,
-    required this.contractAddress,
-  });
-}
-
 class WalletModel implements Describable {
   final String walletRef;
   final String organizationRef;
@@ -55,20 +43,18 @@ class WalletModel implements Describable {
     WalletBalance? balance,
     WalletMoney? availableMoney,
     Describable? describable,
-  }) {
-    return WalletModel(
-      walletRef: walletRef,
-      organizationRef: organizationRef,
-      ownerRef: ownerRef,
-      asset: asset,
-      depositAddress: depositAddress,
-      status: status,
-      metadata: metadata,
-      createdAt: createdAt,
-      updatedAt: updatedAt,
-      balance: balance ?? this.balance,
-      availableMoney: availableMoney ?? this.availableMoney,
-      describable: describable ?? this.describable,
-    );
-  }
+  }) => WalletModel(
+    walletRef: walletRef,
+    organizationRef: organizationRef,
+    ownerRef: ownerRef,
+    asset: asset,
+    depositAddress: depositAddress,
+    status: status,
+    metadata: metadata,
+    createdAt: createdAt,
+    updatedAt: updatedAt,
+    balance: balance ?? this.balance,
+    availableMoney: availableMoney ?? this.availableMoney,
+    describable: describable ?? this.describable,
+  );
 }