Generates the SDF for a Mandelbrot fractal


## Description


based on [https://www.shadertoy.com/view/XsXXWS](https://www.shadertoy.com/view/XsXXWS)

Learn more: [https://en.wikipedia.org/wiki/Mandelbrot_set](https://en.wikipedia.org/wiki/Mandelbrot_set)

## Parameters
no params