Added Realism For Vehicles

The goal of this mod is to make the game feel more realistic and
customizing the vehicle for the task more rewarding.
The goal is to make the mod universal.
This mod supports multiplayer and dedicated servers.
No changes in XML is needed. Some data from XML is overwritten!

Wheels:
In the base game many vehicles does not take tiretype into consideration making for example
the lizard pickup truck recive unrealistic high friction at all ground types.
This mod fill the missing data based on tiretrack index making it universal.
Different tiretypes now act completely different on different ground types and
suffers differently on rain and sinking into the ground.
This mod only supports the 4 standard tiretypes: MUD, STREET, OFFROAD and CRAWLERS!
Calculates friction based on size of tire making wide tires, duals and tracks worth the money for
heavy fieldwork but the narrows suffers making it ideal for easier tasks in later growth state.
Adds rolling and sideway resistance meening:
More wheel load, small tires and soft ground = more force needed for pulling or pushing.
Less wheel load, large tires and hard ground = less force needed for pulling or pushing.
Wheels now dig down into the ground.

Implements:
Pulling force for "Plows", "cultivators" and "sowingmachines" is affected by ground type.
Balers and loading wagons uses power based on fillspeed.

1.1.0.0:
Increased sink of wheels, this will make it harder to pull small wheels in soft ground.
Added missing information about balers and loading wagons use power based on fillspeed.
The power added by fillspeed is now based on the mass of the mateial,
grass needs more power then straw for example.
Slightly increased friction of street tires.
Added the wheel digging into the ground if no traction.
Removed gearbox.