[ATS] MULTIPLE TRAILERS IN TRAFFIC V3.1 1.33.X

Drawbar and B-double versions of the new SCS box vans, curtainsiders, insulated trailers and reefers; drawbar double Profiliners using the v1.31 model (so you don't need the Krone DLC).
- Bottom dumpers: Pup double, Rocky Mountain double, pup triple
- Box vans: Pup double, Rocky Mountain double, Turnpike double, pup triple
- Curtainsiders: Pup double, Rocky Mountain double, pup triple
- Dry bulk tanks: Pup double, Rocky Mountain double, pup triple
- Flatbeds: Pup double, Rocky Mountain double, Turnpike double, pup triple (empty and with various loads)
- Insulated vans: Pup double, Rocky Mountain double, pup triple
- Reefers: Pup double, Rocky Mountain double, Turnpike double, pup triple
- Heavy cargo: traffic versions of all the Heavy Cargo DLC trailers