Add UpdateUserWalletView and CustomUserByWalletBalanceSerializer for wallet balance updates

api/serializers.py

@@ -73,6 +73,15 @@ class CustomReadOnlyUserByIDCardSerializer(serializers.ModelSerializer):
         fields = ("id_card",)
 
 
+class CustomUserByWalletBalanceSerializer(serializers.ModelSerializer):
+    """serializer for the user object"""
+
+    class Meta:  # type: ignore
+        model = User
+        # fields = "__all__"
+        fields = ("wallet_balance",)
+
+
 class UserSerializer(serializers.ModelSerializer):
     """serializer for the user object"""