flsun nozzle tip cooler v3.0

Version 1.0:
I had to design a more uniform filament cooler duct for the nozzle tip. This is designed to be mounted with two m3 screws that can be installed through the existing lower holes for the extruder cooling fan. Nuts are not required but can be used if you strip the plastic following the print.

Flow simulation was also performed to ensure that uniform air flow was distributed around the nozzle tip. I will be working on improvements as the comments roll in. Also, I plan on incorporati