E88 Layout Macro Additions (#20612)
* add matrix_diagram.md
* info.json: apply friendly formatting
* refactor keymaps
- use four-space indent
- grid-align keycodes
- use QMK-native alias for `KC_TRNS`
* add LAYOUT_tkl_f13_ansi
* add LAYOUT_tkl_f13_ansi_split_rshift
* add LAYOUT_tkl_f13_ansi_tsangan
* add LAYOUT_tkl_f13_ansi_tsangan_split_rshift
* add LAYOUT_tkl_f13_iso
* add LAYOUT_tkl_f13_iso_split_rshift
* add LAYOUT_tkl_f13_iso_tsangan
* add LAYOUT_tkl_f13_iso_tsangan_split_rshift
* enable Community Layout support
* Apply suggestions from code review
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