* [Keymap] Adding personal keymap for ikki68 Aurora
* Add license headers
* Added support to toggle LED modes
* Added a toggleable layer for macOS (which swaps the GUI/ALT positions)
* New custom 'super alt' keymap for the Drop ALT
* Improvements to 'super alt' keymap based on PR feedback
* Fix flickering LED caps lock bug
* Code cleanup from PR feedback
* Minor keymap layout cleanup