* Re-enable mouse keys to fix Chrome OS media keys
I'm not sure if there's a bug in Chrome OS, QMK, or both, but
EXTRAKEY_ENABLE isn't sufficient for media keys to work on Chrome OS.
Instead, MOUSEKEY_ENABLE is also required.
* Remove unnecessary SPLIT_USB_DETECT for Lily58
I've since swapped my Lily58 back to Elite-C v2 controllers with working
VBUS detection.
* Move Crkbd Esc and Ctrl keys; add some shortcuts
* Move MC_ALTT to userspace for cross-board support
* Sync Lily58 keymap with Crkbd
* Fix typos
* Remove more mouse keys settings missed in #8836
* Turn off more unwanted make options
* clang-format my userspace
* Reword ergo layout docs so Crkbd is canonical
* Add a basic readme to my userspace
* Tweak Crkbd readme wording and fix typos
* Enable SPLIT_USB_DETECT for Lily58 w/ Elite-C bug
* Initial Lily58 keymap
* Still not sure if these thumb key placements are optimal or not. I
might want to move space (enter) one key to the left (right),
respectively.
* Also unsure how I feel about Esc on a mod tap key with Ctrl... might
move it back to its own key and relocate the = key.
* Missing bindings for Print Screen, Scroll Lock, Pause/Break.
* Make Lily58 layout support operation without numrow
* Move some Lily58 modifiers around
* Move nav keys to more consistent locations
* Rebinding shift on Raise is stupid
* Don't stomp Ctrl on the Lower layer
* Tweak bottom row a little bit
