Doubles/Triples/Heavy Trailers in Traffic for 1.32

- This mod is adding in traffic some of the scs doubles, triples and heavy trailers
– you need to own the Heavy cargo DLC to use this mod and my traffic density mod which contains the spawn files of these additions; load order is not important
– this mod includes the old doubles and triples from 1.31 (the 1.31 files have been imported in this mod in order to work in 1.32)
– added new dry bulk double trailer and the double and triple flatbed
– increased spawn ratio of the new doubles and triples in traffic (dump, flatbed and dry bulk)
– trucks assigned to doubles/triples/heavy cargoes have personalized sounds and colors