Primus75 Layout Macro Additions (qmk#20676)

* add matrix_diagram.md

* info.json: apply friendly formatting

* add matrix position [5, 2] to LAYOUT_all

The PCB supports four 1u mod keys to the left of the Spacebar, but this was not implemented in the original submission to QMK.

* add LAYOUT_ansi_split_bs

* add LAYOUT_ansi

* add LAYOUT_ansi_blocker_split_bs

* add LAYOUT_ansi_blocker

* add LAYOUT_ansi_blocker_tsangan_split_bs

* add LAYOUT_ansi_blocker_tsangan

* add LAYOUT_iso_split_bs

* add LAYOUT_iso

* add LAYOUT_iso_blocker_split_bs

* add LAYOUT_iso_blocker

* add LAYOUT_iso_blocker_tsangan_split_bs

* add LAYOUT_iso_blocker_tsangan