Port ContractorMod to FS19

ContractorMod should work on Farming Simulator 19 taking advantage of

Checks to be performed for validation

[x] Can switch between workers with Tab key
[x] Can switch between workers with Shift + 1,2,3...
[x] Can enter a vehicle and see different character correctly
[x] Character in vehicle still visible when switching characters
[x] Can start a worker and switch to another character
[x] Going out from worker vehicle stop it
[x] Can see on foot characters
- [x] on foot character has required style
- [x] on foot character state is idle
[x] Can enter vehicle as passenger
- [x] Driver still visible
- [x] Passenger visible
[x] Can save current game
[x] Can load savegame

yumi-modding / FS17_ContractorMod