Introduce separate network modes for heavy vehicles

[tschlenther]

[emerging from #3519]

1. Check and think about the following: Heavy-duty vehicles
   • usually do not have the same network as car - but ussually one that is restriced more strongly (e.g. excluding some bridges etc.)
   • should be explicitly separated from cars. They should (roughly) follow the classes for driving permits ( <3,5 t, <7,5t, <12t, ...). Think about how this works outside Germany.... 2.Further:
   • noise and emission calculation depend on the vehicle type and explicitly handle heavy-duty vehicle types. There, we partially work with ID-lookups at the moment (which shall be adressed in a separate issue)
   • think about the travel time observer and how he handles the different modes

[rewertvsp]

For the person who starts with this topic: for the new RVR model we introduced a few more network modes for commercial vehicles. Here you can talk to me (@rewertvsp) or the RVR team or check the repo of the matsim scenario metropole ruhr