Userspace: muppetjones

[muppetjones]

Description

This PR adds:

• My userspace
• Planck keymap
• Lily58 keymap
• Kyria keymap

My userspace and keymaps incorporate code from the following users:

• @splitkb (optimizations)
• @drashna (wrapper.h pattern)
• @andrewjrae (casemodes)
• @j-inc (bongo cat)

I've added the following features in my userspace and keymaps. As I clean up and optimize these features, I'll add them into the main code base.

• Etch-a-Mouse: Encoder-based pointing device movement with acceleration.
• Dynamic, Layer-based RGB: RGB underglow that changes with your layers and respects your current RGB settings. (Need to move this from my kyria into my userspace).

This PR only includes one change outside of my user-specific code: Updates to keyboards/lily58/lib/layer_state_reader.c. The default Lily58 keymap did not compile without these updates.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).