iconutil
There are 3 repositories under iconutil topic.
lexrus/LTFinderButtons
My Finder buttons collection for macOS.
JackMordaunt/icns
Easily create .icns files (Mac Icons) with this Go library or the included CLI.
MisutaaAsriel/Azis-bigSurIcons
Custom macOS 11 Big Sur icons designed by MisutaaAsriel