Customizable 3D Tiling Cellular Node Test

Simple demo showcasing a new node that I've implemented that allows you customize cellular behavior (distance, spawning rate) using injected editor properties instead. This could be extended in a way as to allow using that custom cellular node instead of a voronoi node inside a fractal accumulator, allowing the user to practically calculate an fBm fractal of a custom SDF eventually. This could be used for simple SDF structure generation if you replace the builtin distance function with a custom one.