Ourobouros, the GPU version

This is a GPU "port" of https://twitter.com/MAKIO135/status/1383163336905396225, a hic et nunc NFT by https://twitter.com/MAKIO135. The original NFT is a capture of https://observablehq.com/d/0f7ad63e053a2787?ui=classic, which was a bit sluggish. So we took it as a challenge to move it to the GPU, as an example of how to deal with parametric curves in a vertex shader.

Here's the thread with some more details https://twitter.com/thespite/status/1383359844497825792