Customisable speaker stand

This is a customizable speaker stand. At this point there will always be two parts created. These are intended to be joined. There are indentations for silicone anti slip buttons. Future versions could take the maximum print height into account, but this version simply generates the male and female parts of the leg.

V1: generates 2 parts that fit together
V2: Uses the printerMax field to create a single part or multiple parts depending what fits on the printer. If the maximum size of the printer is exceeded for 2 parts, a third part is generated. This part adds at least heightJoin to the height. If the calculation requires less than heightJoin in the added part, an error message is printed in the STL stating that tuning the printerMax can be used to create a larger center piece.