Freightliner Century Update v 4.0

Freightliner Century Update v 4.0 ATS

Optimization and Support under ATS
Update issued in two files for each game!
The update corrected previously found shoals.
Reconfigure mats.
The work on the interior.
Reworked the entire shadow.
For ETS2 added Sabins Cabin Accessories DLC support.
Spend the same optimization on the model for more FPS. More details smoothed.
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