* info.json: apply friendly formatting
* ck65.h: use QMK 3-character notation
* move Enter keycode/argument to home row
This commit makes the `LAYOUT` macro conformant to `LAYOUT_65_iso` in QMK.
* rename LAYOUT to LAYOUT_65_iso
* use QMK-native KC_TRNS alias in keymaps
Replaces instances of `KC_TRNS` with `_______` in keymaps.
* info.json: update maintainer field