Add serial_link compilation to Infinity Ergodox

Merge pull request #482 from fredizzimo/serial_link

Add serial link library

Remove extra serial_link subdirectory

Remove CGreen make files

Remove serial_link .gitignore and .gitmodules

fix/annotate wait_us lines

Add 'quantum/serial_link/' from commit 'a20d513e3cdacbf6e0e70a80402497ad10166434'

git-subtree-dir: quantum/serial_link
git-subtree-mainline: 7d28d6a7bc81578bb5a83f1d55810ee3d1458e96
git-subtree-split: a20d513e3cdacbf6e0e70a80402497ad10166434

Merge pull request #480 from fredizzimo/add_infinity_ergodox

Add infinity ergodox

Add dfu-util command for programming

Also add .bin generation, which is needed for dfu-util.

Merge pull request #471 from Chipairon/patch-1

Fix for '~' in spanish layout

Merge pull request #478 from fredizzimo/chibios_subprojects

Suprojects for ChibiOS testing

Infinity Ergodox - Add matrix.c and led.c

First version of Infinity Ergodox

Mostly just adding the files from the fredizzimo repository. Still
needs some fixing until it works

Fix typo in teensy_lc_onkey.h

Don't include common_config.h for ChibiOS test

Move ChibiOS test board and ld

Move the ChibiOS test subproject board and ld files to the kebyoard
folder, so that the build system can find them

Suprojects for ChibiOS testing

correct break/return order for planck and preonic defaults

Fixes typos in keycode.txt

Adds wait to i2c (debounce)