[Keyboard] Add PRKL30 keyboard (#8319)

[Keyboard] Add PRKL30 keyboard (#8319)

* Add PRKL30 default keymap

* Modify readmes, fix info.json url

* added layer pictures to readme.md

* edited layer pictures

* edited layer pictures

* edited layer pictures

* edited layout pictures

* edited layout pictures

* Modify default keymap

* Add arrows to Raise layer

* Add perkele macro and adjust symbols

* Add PRKL macro and modify keymap comments

* updated layout pictures

* edited layut pictures

* Add correct minus keycode

* Configure Feather config

* Update keyboards/handwired/prkl30/keymaps/default/keymap.c

* Update keyboards/handwired/prkl30/feather/rules.mk

* Update keyboards/handwired/prkl30/feather/config.h

* Update keyboards/handwired/prkl30/feather/config.h

* Update keyboards/handwired/prkl30/promicro/config.h

* Update keyboards/handwired/prkl30/promicro/rules.mk

* Update keyboards/handwired/prkl30/feather/config.h

* Update keyboards/handwired/prkl30/feather/config.h

* Update keyboards/handwired/prkl30/promicro/config.h

* Update keyboards/handwired/prkl30/feather/rules.mk

* Update keyboards/handwired/prkl30/keymaps/default/keymap.c

* Update keyboards/handwired/prkl30/info.json

* Update keyboards/handwired/prkl30/info.json

* Update keyboards/handwired/prkl30/keymaps/default/keymap.c

* Delete unused config

* Apply suggestions from code review

Commit code review changes

* Remove false comments from rules.mk

* Change layout to layout_all

* Apply suggestions from code review

Co-authored-by: Toni Johansson <toni.r.johansson@gmail.com>