Dual Extruder Chimera Head hot swap for Hypercube NGEN

This is an additional tool head to be used with the Hypercube EVO NGEN from Nedalive.

This will allow to use a dual extruder chimera on the printer, allowing to print dual color/dual material.

Design have been tested already, but this is still a draft version. Next improvement will be to change the design to add a fan for the part, and maybe a better cooling on the head itself.

Only use ABS or any similar material with a glass transition >= 100deg. as the cooling part can still get real