[Keymap] add "ridingqwerty" user and keymap for atreus keyboard (#6533)
* add userspace and atreus keymap
* cleaning up notes/comments
* Update keyboards/atreus/keymaps/ridingqwerty/atreus.c
Co-Authored-By: Joel Challis <git@zvecr.com>
* Update keyboards/atreus/keymaps/ridingqwerty/atreus.c
Co-Authored-By: Joel Challis <git@zvecr.com>
* Create readme.md
* remove reference to matrix_init_kb from atreus.c
* correct atreus.c
* remove unnecessary defines
* merge register/unregister sequence into single tapcode
* move 'LAYOUT to keymap.c; remove atreus.h
* remove TAPPING_TERM from keyboard-level config.h
0c03811d6a