AI Vehicle Extension

This is the very first version of AIVE for FS19.New User InterfaceThe idea behind the new user interface is to move as many settings as possible into new settings dialog. This dialog uses standard elements. Only those options needed for visualization or intermediate action are still available in the head up display (HUD).New Input BindingI changed the input binding. Main reason is that keys 5 and 6 are used for the radio. This is the new setting:H: Start or stop the hired workerLeft shift + H: Open the new settings dialogLeft control + H: Open the head up displayLeft alt. + H: Enable or disable automatic steeringLeft alt. + V: Raise or lower all toolsLeft alt. + 6: Swap sideMotivationI do not like maps with rectangular fields. But driving a combine harvester plus the tractor with trailer is a bit tedious in SP mode.