$ make install
$ appicongen -h
USAGE: appicon-gen [<name>] [--system-image-name <system-image-name>] [--color <color>] [--path <path>]
ARGUMENTS:
<name> output appiconset name (default: AppIcon)
OPTIONS:
--system-image-name <system-image-name>
SFSymbol name
--color <color> hex style color
--path <path> path
-h, --help Show help information.
$ appicongen "Document" --system-image-name "circle" --color "#C0FFEE"