Low Polygon Mask Refactor

### This is a remix of cporto's Low Polygon Mask https://www.thingiverse.com/thing:1097497

### Sometimes you just need to give the gpu a rest and reduce your mesh detail. I wanted to make this model more consistently thick and add some slots for a strap.

In the process I also added a small curved piece to the temple on the inside to hold the mask slightly further away from the eyes. You can add some padding to this for comfort.

Printing this model upside down improved the results on my Ender-3. When I print this model "right side up" the last portion of the forehead had too much overhang and was delaminating.

*Lucky Strike extra, I had a print detach from the build plate a third of the way through. I think the result makes an important statement about a lot of things that I find here on Thingiverse.*