Create track.

[MarcAbonce]

TODO:

• [x] Straight line track
• [x] Rainbow texture
• [x] Curves
• [x] Infinite loop

[BenjaVR]

Infinite track (circle/oval).

[MarcAbonce]

d0754790162d90307bcd97836c6d4130f34b7a68 changes track so it's drawn as a (Centripetal Catmull–Rom spline)[https://en.wikipedia.org/wiki/Centripetal_Catmull%E2%80%93Rom_spline].

For now the track is still hardcoded, for the next delivery we can change that by either adding levels or by random generation.