Add h87a keyboard (#3329)

Add h87a keyboard (#3329)

* Add H87a keymap and info

* Create readme.md

* Add h87a .json for kbfirmware.com use

* Update readme.md

* Update readme.md

* Update h87a files

* Delete Makefile

* Update readme.md

* Delete desktop.ini

* update files to match new QMK framework

* Update files to match new QMK structure

* Update files to match new QMK structure

* add layout name information

* Add info.json

* update keymap to support layout_all

* update keymap to support layout_all

* update rules.mk to fix filesize

* Update readme.md

* Update config.h

* Update readme.md

* Update config.h

* Update config.h

Add "define CONFIG_H and include "config_common.h" back to file