[Auth] Consider adding passkey as app lock option

[Nahuel92]

Hi there!

First off, this is an incredible app. Thanks for making it!

I would like you guys to consider the option to lock the app via passkeys on all platforms, for example using Yubikey.

The motivation behind this is that, today, most people installs everything on their phones. This means that, if their phones are stolen, thieves can manage to bypass the lock screen and use the authenticator app to perform harmful things if sensitive apps are on the phone (e.g., money withdrawals, data leaks, reputation damage, scams, etc.).

An alternative would be to not use the mobile app at all, and rely on a different device as 2FA. That way, even if someone steals somebody's phone and manages to bypass the lock screen, the damage would be limited if sensitive apps are installed (because they couldn't use the 2FA).