ETS2 - Maz 504B-515B Update 30.05.22

Updated for 1.44 patch.
- Includes updated openable window(only left window) from AJIEHA
- Fixed Side turn signals (was "black hole" there now they are as they should be)

Authors: Original authors: JAWA, Stas556, dmitry68, Mishanka,Adaptation and support up to 1.26 _69_mf_.Adaptation, alteration, corrections and additions(1.35-1.41 and 1.44): vasja555.Recent Changes: MaxX_Agent Window animations: AJIEHA