Tatra 813 Drtikol v1.0.0.0

The original Stywa model. Textures Tomáš Gorlich, the hull was written in kottna and I did the rest. The plan is still to modify textures, sounds, UDIM textures specularky "spotting", but since it takes a lot of time, so I decided to give this version. Windows and doors are opened using Simple IC mode.