Wilba Tech WT60-G Community Layout Support (qmk#20860)

* add matrix_diagram.md

* info.json: apply friendly formatting

* add LAYOUT_60_iso_split_bs_rshift

* add LAYOUT_60_iso

* add LAYOUT_60_iso_tsangan_split_bs_rshift

* add LAYOUT_60_iso_tsangan

* add LAYOUT_60_ansi_split_bs_rshift

* add LAYOUT_60_ansi

* add LAYOUT_60_tsangan_hhkb

* add LAYOUT_60_ansi_tsangan

* add LAYOUT_60_hhkb

* enable Community Layout support