randomizer

Add the ability to save/load what options you have selected to easily generate new seeds with the same settings. Could also ensure race seed is always made correctly and easily.

The multiworld room search is currently case sensitive, which leads to some confusing behaviour.
It would be nice if it was case insensitive instead.

There is a missing functionality in payment.rs.

• Add credit_card_luhn_number body, whould generate a proper luhn validated credit card number.