[Keyboard] Unigo66 fixes and improvements (qmk#5060)

* UniGo66 keyboard added

* UniGo66 keyboard added

* case correction of unigo66 files

* create sirius folder

* Update keyboards/sirius/unigo66/rules.mk

Co-Authored-By: danielhklein <[email protected]>

* Update keyboards/sirius/unigo66/keymaps/danielhklein/keymap.c

Co-Authored-By: danielhklein <[email protected]>

* Update keyboards/sirius/unigo66/keymaps/default/config.h

Co-Authored-By: danielhklein <[email protected]>

* Update keyboards/sirius/unigo66/keymaps/danielhklein/config.h

Co-Authored-By: danielhklein <[email protected]>

* debugging

* correct keymap to layout

* readme

* remove common config

* suggested changes to config.h

* updates and fixes