Parameterized Mask Nose Clip

This is a remix of the "Improved face mask nose clip" by gasstationwithoutpumps.

The primary intent of this remix is to provide a parameterized SCAD file that is not dependent on the ever-changing BOSL2 libraries, and instead just utilizes the free open-source OpenSCAD base program (https://www.openscad.org) or the Thingiverse Customizer. The STL files included are just examples that are fitted to my nose. Users should be using the SCAD file and creating their own STL files for printing (this takes some trial and error).

Specific changes made by this Remix:

Removed all dependency to the alpha-release BOSL2 libraries
Rounded the bottom edge of the clip for comfort
Provided parameters to roughly-contour the nose-bridge portion of the clip to the user's nose (nose width and height variance)
Provided various cheek-to-nose transition options:
Option 0 - Straight: This option rests on the outside of the mask and provides a straight cheek-to-nose transition piece. I had problems