Add OTP based password less auth

[lakhansamani]

Feature Description

Add passwordless auth without redirection. With the magic link, currently the user has to switch to email and click on the link which opens in a new tab. This becomes problematic with OpenID flow as the state of the flow cannot be resumed.

Describe the solution you'd like

Allow user to signup / login with OTP (one-time password)

Describe alternatives you've considered

Additional context