fix(Configs): Add model3d and mass to oldtimer and lorry

sim/contrib/examples/Common/Vehicles/VehicleModelsCatalog.xosc

@@ -441,7 +441,7 @@
         <RearAxle maxSteering="0.0" wheelDiameter="0.59" trackWidth="1.8" positionX="0.0" positionZ="0.295"/>
       </Axles>
     </Vehicle>
-    <Vehicle name="car_oldtimer" vehicleCategory="car">
+    <Vehicle model3d="car_oldtimer" mass="1525.0" name="car_oldtimer" vehicleCategory="car">
       <Properties>
         <Property name="AirDragCoefficient" value="0.3"/>
         <Property name="AxleRatio" value="2.813"/>
@@ -456,7 +456,6 @@
         <Property name="GearRatio6" value="1.0"/>
         <Property name="GearRatio7" value="0.822"/>
         <Property name="GearRatio8" value="0.64"/>
-        <Property name="Mass" value="1525.0"/>
         <Property name="MaximumEngineSpeed" value="6000.0"/>
         <Property name="MaximumEngineTorque" value="270.0"/>
         <Property name="MinimumEngineSpeed" value="900.0"/>
@@ -547,7 +546,7 @@
         <RearAxle maxSteering="0.0" wheelDiameter="0.808" trackWidth="1.8" positionX="0.0" positionZ="0.404"/>
       </Axles>
     </Vehicle>
-    <Vehicle name="truck_lorry" vehicleCategory="truck">
+    <Vehicle model3d="truck_lorry" mass="30000.0" name="truck_lorry" vehicleCategory="truck">
       <Properties>
         <Property name="AirDragCoefficient" value="0.8"/>
         <Property name="AxleRatio" value="4.0"/>
@@ -562,7 +561,6 @@
         <Property name="GearRatio6" value="1.217"/>
         <Property name="GearRatio7" value="0.876"/>
         <Property name="GearRatio8" value="0.630"/>
-        <Property name="Mass" value="30000.0"/>
         <Property name="MaximumEngineSpeed" value="2500.0"/>
         <Property name="MaximumEngineTorque" value="1400.0"/>
         <Property name="MinimumEngineSpeed" value="600.0"/>