[Keyboard] HB85 Refactor/Layout Addition (#5451)

[Keyboard] HB85 Refactor/Layout Addition (#5451)

* introduce stt layout with K(row)(col)

* set bootmagic to lite

* Rename the original LAYOUT to LAYOUT_all
Introduce the STT layout

In additional the whole matrix was changed to support the K(row)(col) notation.

* rename LAYOUT to LAYOUT_all

* add QMK Configurator support

* stt keymap based on mrpetrov's default configuration on the hb85 he lent me

* update readme

* introduce basic and aop layouts along with QMK Configurator support for them

* add a new line

* add EEP_RST to layer 1 as it is needed to get rgb underglow to work

* add documentation on how to reset the eeprom on the board

* put contributors names where appropriate