Improve UX by avoiding the need to click some buttons twice, or
calling TOTP and Recovery codes both "OTP" codes and showing multiple
buttons, with all having the same goal "submit a TFA token" at the
same time.
Instead use a tab panel with a single submit button.
WebAuthn can and should be still improved, but that can be OK as
followup.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
f91481eded