Mod MBWR Alps 0.6 for BeamNG.drive

Fixed bugs
Updated several wall textures.

This is a map from the old racing game "Mercedes Benz World Racing" (2003)
. This is a 2x2.5 km map inspired by the Alps.
It is a mixture of paved, unpaved and snowy roads.

Features:
- Complete terrain and roads imported and converted to PBR
- Timetrials [x5]
- Animated flying objects
- Traffic

Todo:
- Upgrade additional textures to PBR
- Working lighting (street lights and tunnels)
- Adding details to rocks