[New build - EXPERIMENTAL] 21w33c: Visual Improvement: Glow

A visual improvement has been added to improve the game feel from far distances.
Now thrusters, lights and entities have a smooth glow when viewed from afar (like the current light on the torus).
Soon more elements will use the same technology.

Bugfixes:

• #4126 Some rotator fails to load.
  

Thanks for playing!