[Keymap] Adding keymap for Nyquist (#4918)

[Keymap] Adding keymap for Nyquist (#4918)

* Added busby222 config

* Fixed bug with leftover colemak and dvorak layouts

* Fixing dumb mistake

* Minor tweaks to layout. Need to use at work tomorrow to make more adjustments

* Added mouse controls for raised layer

* Update keymap.c

* Update keymap.c

* Update keymap.c

* Update keymap.c

* Update keymap.c

* Update config.h

Added mouse specific settings for smoother mouse movement (default is sort of hard to use)

* config.h cleanup

* Lowering max mouse speed (personal preference)

* Update keymap.c

* Update keymap.c

* Update keymap.c

* Update keymap.c

* Update keymap.c

* Update config.h

* Update rules.mk

* Added MIDI layer

* Switched the Adjust layer to an MO call

* Update keymap.c

* Fixing bugs related to midi layer

* Changed "Caps Lock" ctrl to RCTRL for use in VirtualBox

* Added shovelpaw keyamp

* Removed deprecated QUANTUM_DIR code block

* Switched midi layer to be only active when held

* Addressing requested changes

* Removed unnecessary include statement