[Keyboard] Add Southpole keyboard (#4946)

[Keyboard] Add Southpole keyboard (#4946)

* Added southpole keyboard

added southpole keyboard folder and files including keymaps folder. Keymaps have errors and will not compile yet

* Add files via upload

added manufacturer and product name and description

* Update config.h

* Add files via upload

changed formating added layer

* cleaned up files, fixed foobeard keymap, and added maker info

* fixed keymap files

* Update keyboards/southpole/keymaps/foobeard/keymap.c

Co-Authored-By: ericduns <ericduns@gmail.com>
* Update keyboards/southpole/keymaps/default/keymap.c

Co-Authored-By: ericduns <ericduns@gmail.com>
* made changes fixing outdated lines and added readme.md

* made requested changes for pr to all files

* removed vs code and added new line to southpole.h