[Feature request] Regex support

As far as I know, MySQL supports string matching via regular rexpressions natively since v5.7, so this shouldn't be too difficult to implement, but it would provide a lot of value for the more technically savvy users. I do a lot of searches via Scryfall that supports regular expressions in a wide array of fields, and not having this option on Deckbox makes me overlook a lot of cards in my collection by accident.