* [Keyboard] Modernize the KMAC implementation
This brings the matrix implementation more in line with the current
default matrix code.
It also simplifies the implementation quite a bit.
* [Keyboard] Add layout support to KMAC
* Add default value for IS_COMMAND for COMMAND feature
* Cleanup and consistency
* Update Templates to reflect change
* Fix IS_COMMAND in template
* Fix IS_COMMAND define
* Use consistent IS_COMMAND block in templates
* Remove unnecessary `#undef IS_COMMAND` directives
* Fix compile issue on orthodox
* Reomve IS_COMMAND option for newer boards
* Remove all existing definitions of IS_COMMAND if they use default LSHIFT and RSHIFT setting
* Remove a couple of additional IS_COMMAND defines
* Remove remaining redundant IS_COMMAND definitions
* Remove #undef IS_COMMAND from orthodox:drashna and whitefox:konstantin
* Remove multiple empty lines in modified config.h files
* Update additional boards
* Reomve IS_COMMAND from newer boards
* Update Alice keyboard
* Remove IS_COMMAND from additional boards
Jan 24th edition
Mathias Andersson
Drashna Jaelre
zvecr