Koch snowflake in BlocksCAD

This is a recursively generated fractal in BlocksCAD. It's rather cool that a simple block language like that can do recursion. The project page is [here](https://www.blockscad3d.com/community/projects/67783). Create a derived project to edit the parameters.

As per Challenge instructions, the main code repeats a basic shape in a loop: the basic shape is one of the three sides of the Koch curve.