* Add layout/matrix diagram
[docs]
* Alias `LAYOUT_all` to `LAYOUT_split_6u`
`LAYOUT_all` and `LAYOUT_split_6u` represent the same matrix positions
and sequence, so implement the former as an alias.
[refactor]
* Touch-up keymaps
- grid-align keycodes
- use QMK-native keycode aliases
[chore]
* Friendly-format `info.json`
[style]
* Correct layout data
Correct key sizes/positioning on the bottom row.
[chore]
* Rename `LAYOUT_2u_6u` to `LAYOUT_65_xt_ansi_blocker`
[refactor]
* Rename `LAYOUT_2u_7u` to `LAYOUT_65_xt_ansi_blocker_tsangan`
[refactor]
* Rename `LAYOUT_split_6u` to `LAYOUT_65_xt_ansi_blocker_split_bs`
[refactor]
* Rename `LAYOUT_split_7u` to `LAYOUT_65_xt_ansi_blocker_tsangan_split_bs`
[refactor]
