Zelda BOTW Guardian Sword++ - Strength Remix

Remixing the original Adafruit designs to make certain parts a little stronger.
* Screwholes now have now 1.2mm thick walls, so can be printed with a 0.4mm nozzle without changing the nozzle settings when slicing
* Screwholes now attach to the outer perimeter for extra strength, and ease of printing/less chance of underextrusion
* Segment Joining parts now slightly reinforced, joined into perimeters when within a certain distance.

This is a work in progress, so I'll slowly go through a