Filament Buffer Release Button for P1/X1

Updated: Reduced the overall face size to fix clearance issues with the back of the printer. Allows for the easy removal of filament buffer PTFE tube without the need for tools or frustration. I've tried several PTFE release buttons, and none would stay in place reliably. This design features three evenly spaced clips to hold the buttons in place, regardless of their rotation. Works with both for P1 and X1series. To install, remove each PTFE tube, snap the button into the filament buffer, and then reinstall the tube. A version for the AMS hub can be found here: https://makerworld.com/en/models/138293