Creates a layouts/ folder for keymaps shared between keyboards (#1609)

* 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

keyboards/s60_x/default/rules.mk

@@ -3,7 +3,3 @@ COMMAND_ENABLE = no        # Commands for debug and configuration
 NKRO_ENABLE = no          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 BACKLIGHT_ENABLE = no     # Enable keyboard backlight functionality
 RGBLIGHT_ENABLE = no
-
-ifndef QUANTUM_DIR
-	include ../../../Makefile
-endif

keyboards/s60_x/rgb/rules.mk

@@ -2,8 +2,4 @@ CONSOLE_ENABLE = no        # Console for debug(+400)
 COMMAND_ENABLE = no        # Commands for debug and configuration
 NKRO_ENABLE = yes          # USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 BACKLIGHT_ENABLE = yes     # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = yes      # Enable RGB light
-
-ifndef QUANTUM_DIR
-	include ../../../Makefile
-endif
+RGBLIGHT_ENABLE = yes      # Enable RGB light