RART80 Hotswap Layout Additions (#20791)

* add matrix_diagram.md

* info.json: apply friendly formatting

* refactor keymaps

- use four-space indent
- update grid alignment of keycodes

* add matrix position [4, 1] to LAYOUT_all

* add LAYOUT_tkl_f13_ansi_tsangan_split_bs_rshift

* add LAYOUT_tkl_f13_ansi_tsangan

* add LAYOUT_tkl_f13_ansi_wkl_split_bs_rshift

* add LAYOUT_tkl_f13_ansi_wkl

* add LAYOUT_tkl_f13_ansi_cwkl_split_bs_rshift

* add LAYOUT_tkl_f13_ansi_cwkl

* add LAYOUT_tkl_ansi_tsangan

* add LAYOUT_tkl_ansi_tsangan_split_bs_rshift

* add LAYOUT_tkl_ansi_wkl

* add LAYOUT_tkl_ansi_wkl_split_bs_rshift

* add LAYOUT_tkl_ansi_cwkl

* add LAYOUT_tkl_ansi_cwkl_split_bs_rshift

* enable Community Layout support