2FA 

**Is your feature request related to a problem? Please describe.**
Adding 2FA options to the Settings to make accounts extra secure

**Describe the solution you'd like**
Being able to add multiple 2fa methods (U2F, TOTP)

**Additional context**
Its great to be able to add multiple authentication keys + totp in case a user uses a password manager like bitwarden plus something like a Yubikey
