FS17vehicleShaderGTSR for FS19

Version 2.0.0.0

-Adds the Parameter "SM" for "Smoothness" and "Metalness" allowing mirror finishes (chrome) over diffuse colors or a diffuse map.

-Allows for a much higher gloss / reflection

- Adds the Parameter "dirtColor" for Dirt Color Manipulation. Works with : (Real Dirt Color)