* Durgod keyboard refactor in preparation for adding additional durgod keyboards
* Moving Durgod board configuration into a common location
* Reformatting layout macro whitespace
* Moving TGUI key functionality to the keyboard level
* Replacing default keymap.c with keymap.json
* Changing default and default_toggle_mac_windows keymaps to LAYOUT_all
* Increasing EEPROM size to support more VIA layers
* Fixing media keys; KC_MRWD/KC_MFFD => KC_MPRV/KC_NXT
* Move ISO Enter key to the correct row in Durgod K320
* Minor whitespace and readme cleanup for K320
* Changing durgod/k320 debounce back to default
* Simplifying DURGOD_STM32_F070's chconf.h
Co-authored-by: Simon Arlott <sa.me.uk>
Co-authored-by: Tyler Tidman <tyler.tidman@draak.ca>
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