Wuque Creek70 Layout Additions and Touch-Up (#21346)
* [chore] correct layout data
* [docs] add layout/matrix diagram
* [refactor] rename LAYOUT to LAYOUT_all
* [enhancement] add LAYOUT_ansi_split_space_split_bs_rshift
* [enhancement] add LAYOUT_ansi_split_space
* [enhancement] add LAYOUT_ansi_split_bs_rshift
* [enhancement] add LAYOUT_ansi
* [enhancement] add LAYOUT_ansi_tsangan_split_bs_rshift
* [enhancement] add LAYOUT_ansi_tsangan
* [style] refactor keymaps
- use four-space indent
- convert tabs to spaces
- use QMK-native keycode aliases
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