* XMMX: matrix and keymap refactor
- xmmx.h updated to use #pragma once
- renamed LAYOUT_ansi_wk macro to LAYOUT_tkl_ansi
- renamed LAYOUT_ansi_wkl macro to LAYOUT_tkl_ansi_wkl
- renamed LAYOUT_iso_wk macro to LAYOUT_tkl_iso
- renamed LAYOUT_iso_wkl macro to LAYOUT_tkl_iso_wkl
* XMMX: Configurator support
* XMMX: readme update