Implementation of this.
Yat payment addresses
Usage: yat --yat <YAT> <COMMAND>
Commands:
lookup Looks up the payment addresses
create Create a new payment address
help Print this message or the help of the given subcommand(s)
Options:
-y, --yat <YAT> Yat (an emoji string)
-h, --help Print help information
-V, --version Print version information