[DENIED] Add smoother, more satisfying curves to stunt race tubes

[Axhov#0001]

Title. I did some experiments with adding more tubes that are slightly offset to add more polygons to the hitbox of a stunt tube, making for a much smoother driving experience when going in a loop or otherwise. I think doing this, while making the smoothing tubes invisible, can make for a really smooth and satisfying driving experience. I don't personally like the jerky movement the stunt tubes' dodecagon esque hitbox when you move from one flat surface to another.

[amgross#6278]

This has a massive impact on the grip, this could make some maps a little to easy.

[Steve]

This cannot be done