Portal 66 Layout Macro Refactor (#15255)
* soldered.h: use QMK 3-character notation
* soldered.h: add matrix diagram
* portal_66/soldered: rename LAYOUT_65_ansi_split_bs to LAYOUT_65_ansi_blocker_split_bs
* portal_66/soldered: rename LAYOUT_65_ansi to LAYOUT_65_ansi_blocker
* portal_66/soldered: rename LAYOUT_65_tsangan_split_bs to LAYOUT_65_ansi_blocker_tsangan_split_bs
* portal_66/soldered: rename LAYOUT_65_iso to LAYOUT_65_iso_blocker
* portal_66/soldered: add LAYOUT_65_iso_blocker_split_bs
* portal_66/soldered: add LAYOUT_65_iso_blocker_tsangan_split_bs
* portal_66/soldered: enable Community Layout support
* hotswap.h: use QMK 3-character notation
* hotswap.h: add matrix diagram
* portal_66/hotswap: rename LAYOUT to LAYOUT_65_ansi_blocker
* portal_66/hotswap: enable Community Layout support
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