[Feature Request] Optional Regex Filtering for Creating Result

[WoogieNoogie]

An interesting use case that I've stumbled into while using this library is the possibility of having either an extra code in frame, or possibly some sort of false positive from ML Kit, while expecting a very specific result. I don't think it would detract from the project's aim for simplicity to send a regex with the request that either ignores anything that doesn't match, or gives a prompt of some sort when a non-matching result is found.

I would consider contributing this if it was accepted as a possible feature, but understand if it seems out of scope for the original aim of the librarly.