* Created base sixshooter configuration
* Added SixShooter basic LED on/off support.
* Updated LED identifier numbers to align with layout identifiers (and IDs on PCB).
* Minor sixshooter documentation cleanup.
* Added sixshooter info.json file.
* Moved sixshooter custom keycodes out of keymaps and into base keyboard files, small documentation tweaks.
* Removed unnecessary boot section size definition.
* Removing CONFIG_H if/define and replacing with #pragma once.
