Generate numbers that pass the Luhn algorithm check.
--length: number of digits--prefix: first few digits (if you need a specific BIN or card type)--cardtype: if you want a specific card type. Options areV(Visa),M(Mastercard),D(Discover) andA(American Express). Will set the length and prefix.--seed: seed for deterministic pseudo-random output--trailing-newline: if a trailing newline should be emitted