[Keyboard] Addition Eagle II keyboard (#7927)
* add EagleII Keyboard
* Update eagleii.c
* Update eagleii.h
* Update keymap.c
* Update eagleii.h
* Update keymap.c
* Update keyboards/handwired/eagleii/config.h
* Update keyboards/handwired/eagleii/config.h
* Update keyboards/handwired/eagleii/rules.mk
* Update config.h
* Update rules.mk
* Update eagleii.h
* Update eagleii.h
* Update keymap.c
* Update info.json
* Update keyboards/handwired/eagleii/rules.mk
* Update keyboards/handwired/eagleii/rules.mk
* Create readme.md
* Update keyboards/handwired/eagleii/readme.md
* Update keyboards/handwired/eagleii/config.h
* Update keyboards/handwired/eagleii/readme.md
* Update keyboards/handwired/eagleii/readme.md