Consume @simplewebauthn/server for challenge generation and response verifications

[intellix]

I've already achieved this and can help out but basically this library hasn't been touched for 1 year and a lot of people reach for passport libraries for their authentication, especially when they're "official" like this library.

Since this library isn't maintained and isn't complete I think it would be safer for this library to just consume https://simplewebauthn.dev/docs/packages/server for the challenge generation and the verification as opposed to manually repeating all of the same logic. It would mean removing lots of code and if there are any security issues it's as simple as updating the peerDepedency