ETS2 - Ekeri Trailers Revision by Kast v1.04

Semi-trailers with various wheelbase and axle config.

Changelog v1.0.4
-fixed bugs
-adapted for 1.46

Features:
-Standard
-Step-frame
-City
-Double
-HCT
-Advanced coupling
-Trailer lift axle
-Animated braces
-Trailer cables

Authors: scs, kast