Needs bgl ported to another API on Blender 4.0

[0lento]

There's been deprecation warnings about this on Blender 3.6 and now on Blender 4 this add-on doesn't show any visualization anymore.

I've naively let GPT-4 upgrade the api for me here: 0lento@b09d322 but I haven't checked if this breaks some functionality or if it's even using the right approach. Basic functionality seems fixed on Blender 4 though so leaving this here if it helps someone.

Apparently current gpu module doesn't support anti-aliasing though, so drawing with this now results in aliased lines. So maybe some alternative take on this might be preferred to achieve smooth lines?

[0lento]

Closing this now since https://github.com/Jrome90/Fast-Loop/tree/Blender-4.0 exists