ATS - Freightliner Classic XL (BSA Public)

Freightliner Classic XL V3.2 (BSA public) for ATS v1.51 or higher.
- Tested in ATS v1.51/ v1.52/ v1.53. The latest of those was v1.53.1.5s;
- Interior shadows support added;
- Some new skins added;
- Found issues fixed.

Authors: blacksitearea