chore: misc cleanup

chore(main): release e24-receiver-board 0.1.1 (#19) * chore(main): release e24-receiver-board 0.1.1 * chore: update KiCad revisions --------- Co-authored-by: mikesmitty

chore: tidy up schema

chore: update KiCad dates

fix: update to kicad 9.0

chore: add hardware revision and date codes

chore: move hardware projects to subfolder