[Keyboard] Add Kay65 PCB by Team Mechlovin' (#15565)
* add kay65 PCB
* update
* update
* Update readme.md
* Update keyboards/mechlovin/kay65/rev1/rules.mk
* Update keyboards/mechlovin/olly/jf/rules.mk
* Update keyboards/mechlovin/kay65/rev1/rules.mk
* Update keyboards/mechlovin/kay65/rev1/info.json
* Update keymap.c
* update
* Update keyboards/mechlovin/kay65/rev1/rev1.h
* Update keyboards/mechlovin/kay65/rev1/info.json
* Update keyboards/mechlovin/kay65/rev1/info.json
* Update keyboards/mechlovin/kay65/rev1/rules.mk
* Update keymap.c
* Update readme.md
* Update keyboards/mechlovin/olly/jf/readme.md
* Update keyboards/mechlovin/kay65/rev1/config.h