ErgoDox Infinity full hand case extension

This print replaces two of the acrylic spacers for the ErgoDox Infinity to add built-in wrist rests to your keyboard.

It is based on the original case files (available on the [Input Club GitHub](https://github.com/kiibohd/case/tree/master/infinity-ergodox/rev-b)).

This version features:

- Full-hand extension/wrist rest that's built into the case. (The top surface aligns with the top of the acrylic.)
- Improved I/O housing on the back of the case
- Minimal additional hardware

## Instructions

You will need to print:

- 1x `ergodox-case-R`
- 1x `ergodox-case-L`
- 4x `ergodox-case-foot`

You will also need:

- 4x M3 screws with flat/countersunk head (any length from 8mm-17 mm should work, but I built/tested with 14 mm). If you don't have screws, you can just glue the feet on.

I printed in PLA at 0.2 mm layer height, but the specifics shouldn't matter. No supports are needed, but you might have to rotate parts to fit on your printbed. (They *do* fit on the Prusa.