Is your feature request related to a problem?

Currently, you can use webauthn on the UI and CLI, but they are currently coupled together in the code. OTP must be enabled for webauthn to work correctly, and MFA levels are associated to TOTP.

Describe the solution you'd like

We created a prototype for this here: Shopify#204. The commits show the different parts and the sequence of the changes we need to make.

Additional context

Demo can be found here: Shopify#204 (comment)