ETS2 - Steering Wheels for All Trucks

All steering wheels for all trucks:
DAF: 10
Iveco: 3
MAN: 8
Mercedes: 4
Renault: 8
Scania: 7
Volvo:4

UPDATE & Fixes:
Fixed renault.etech_t steering_w to other renault models.
Added v8 steering wheel from scania.streamline to other scania trucks.

Authors: Mario Parvanov (MarioBG02)