* add matrix diagram to keyboard header file
* friendly-format info.json
* correct layout data
* add legends to info.json key labels
* add LAYOUT_split_space_split_bs
Rename the `LAYOUT` tree in info.json to `LAYOUT_split_space_split_bs`, and add a corresponding layout macro.
* add LAYOUT_all data to info.json
* add LAYOUT_7u_space
* add LAYOUT_7u_space_split_bs
* add LAYOUT_split_space
* convert tabs to spaces in dyz40.h