QK65 Solder Community Layout Support (#16796)
* refactor solder.h
- use QMK 3-character notation
- convert tabs to spaces
* solder.h: add matrix diagram
* rename LAYOUT_solder to LAYOUT_all
* rename LAYOUT_iso to LAYOUT_65_iso_blocker
Also adds Community Layouts rule to `rules.mk`.
* info.json: improve formatting
- convert tabs to spaces
- format file to four-space indent
* refactor keymaps
- convert tabs to spaces
- update grid alignment of keycodes
- remove trailing whitespace
* add LAYOUT_65_ansi_blocker
* add LAYOUT_65_ansi_blocker_split_bs
* add LAYOUT_65_iso_blocker_split_bs
* add LAYOUT_65_ansi_blocker_tsangan
* add LAYOUT_65_iso_blocker_tsangan
* add LAYOUT_65_ansi_blocker_tsangan_split_bs
* add LAYOUT_65_iso_blocker_tsangan_split_bs
* remove 65_ansi_blocker_tsangan_split_bs from `LAYOUTS` rule
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