ATS - Headlights for SCS Trucks

New options and improved headlights for trucks.
Added a choice of halogen, LED or xenon headlights for all SCS trucks
Increases the low beam illumination angles.
Increases the driving beam range.
The mirror reflections of the passing light are eliminated
Reduced brightness of LED and xenon headlights

Changes: Added support for Western Star 5700XE

For version 1.46.x

Authors: Eddie Yantz