Kibou Wendy Layout Additions and Touch-Up (qmk#21367)

* [style] refactor keymaps

- use four-space indent
- grid-align keycodes
- use QMK-native keycode aliases

* [style] friendly-format info.json

* [chore] remove key overlaps in layout data

* [chore] correct key sequence

* [chore] add key labels

Add `label` keys to the JSON layout data to disambiguate which keys each
object is meant to represent.

Based on the original key sizes and positions as submitted by the
maintainer.

* [docs] add layout/matrix diagram

* [refactor] rename LAYOUT to LAYOUT_all

* [enhancement] add LAYOUT_tkl_ansi_split_bs_rshift

* [enhancement] add LAYOUT_tkl_iso_split_bs_rshift

* [enhancement] enable Community Layout support