Exterior view reworked for Scania Nextgen S/R/P/G v1.1.1

This simple mod adds a complete new and better exterior view for Scania Nextgen S/R/P/G:

Changes v1.0:
Add complete new exterior view with all variants in normal and highline cabin for Scania S/R(EU,UK)

Changes v1.1:
Add complete new exterior view with all variants in normal and highline cabin for Scania P/G(EU,UK)
Change def files, update PMGs for 1.36

Changes v1.1.1:
Change def files for 1.37
fix some textures for 1.37