[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>