KBDfans Odin Soldered Layout Additions and Touch-Up (#20695)

* add matrix_diagram.md

* info.json: apply friendly formatting

* info.json: correct layout data

* add LAYOUT_ansi

* add LAYOUT_iso

* add LAYOUT_ansi_split_bs_rshift

* add LAYOUT_iso_split_bs_rshift

* refactor default and via keymaps

- use four-space indent
- grid-align keycodes

Author: noroadsleft