* 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
* Enable link-time optimization
* Make RGB static gradient ranges shorter
* Shift Quefrency media keys to the right
* Shift KBD67 media keys to the right
* Move some 60% keys from function to adjust layer
* Set "extra" Lily58 keys to browser back/forward
* Remove Instant60 EEPROM hack after #6968
* Remove unnecessary bits from macropad keymaps
* Update KLE images
