Offer Passkey based authentication

[StefanSchubert]

Passkeys are the upcoming security standard für authentication, as there won't be a shared secret which will be transmitted. Meaning if the server is being compromised you identity is still safe, as there won't be a safed passphrase.

However, we need to think about the "passkey" lost scenario. How to recover an ID. I guess it's the same with issuing a link via email to generate a new one.