Col de Thannenkirch V1.5

Dear Assetto's racer,

Here's the V1.5 of the Col de Thannenkirch and the changelog of the update :

• Replacement of trees and bush textures

• Addition of several roads (open map version)

• Addition of collision parameter

• Little rework on the mesh road (a little less bumpy on some section)

• Addition of traffic lines for 2 layout (everyday layout)