ETS2 - Freightliner Cascadia 49X Tweaks V1.2

Features:
-Added support for 2020+ model year parts.
-Fixed lightmask on side marker for LED exclusive headlights.
-Slid fifth wheel on 6x4 long chassis.
-Changed side blinker light flares to no light variant to prevent light from leaking into cab.
-Compatibility fixes for ATS version 1.44.
-Moved hood mirror interior model to a more realistic and accurate location.

Authors: supersobes