Move switch between Webauthn and YubiKit from Settings app into app

[tladesignz]

Currently, if you want to switch from using Safari's integrated Webauthn support to using a YubiKey with bundled YubiKit library after the first time, you need to do that in the Settings app's section for the Funke Wallet app.

There were requests if we should change that.

Currently, the app is a full web view, besides the first scene where the user chooses between these two options at first run.
No UIKit overlays whatsoever.

Question is, if we should change that, because only a very rare number of people will want to use the app with a YubiKey. Additionally, if you created an account once with one or the other method, you won't be able to just use the other method, as there won't be any private keys with which to unlock the account.

So, such a feature might end up to just be an annoying source of confusion.

[tladesignz]

wwWallet will hint to the wrapper apps, if we should pass on the requests to the native WebKit/iOS handling or if we should invoke YubiKit:

wwWallet/wallet-frontend#632

[tladesignz]

@emlun, can you verify, that my logic is sound?

https://github.com/wwWallet/wallet-ios-wrapper/blob/main/wwWallet/Web/Bridge.js#L149-L209

[emlun]

Looks correct to me!

I would invert the logic expressions to !(&& && &&) instead of ! || ! || ! || !, but that's just a matter of preference. 🙂