This moves the config_common.h into the files that include ../config.h,
so that the kint36/config.h does not include it (which would cause
compilation errors).
* Move some common matrix code to a common location
* Refactor some 'custom_matrix_helper' logic to use custom matrix lite
* Fix build for kinesis/stapelberg - abuse of vpath was picking up matrix.c from core when custom matrix was enabled
* Add validation for CUSTOM_MATRIX
* include variables and .h files as pp directives
* start layout compilation
* split ergodoxes up
* don't compile all layouts for everything
* might seg fault
* reset layouts variable
* actually reset layouts
* include rules.mk instead
* remove includes from rules.mk
* update variable setting
* load visualizer from path
* adds some more examples
* adds more layouts
* more boards added
* more boards added
* adds documentation for layouts
* use lowercase names for LAYOUT_
* add layout.json files for each layout
* add community folder, default keymaps for layouts
* touch-up default layouts
* touch-up layouts, some keyboard rules.mk
* update documentation for layouts
* fix up serial/i2c switches
Zach White
Michael Stapelberg
Joel Challis
fauxpark
noroadsleft
Brian Choromanski
U-LANDSRAAD\drashna
Jack Humbert
milestogo