Add wp-cli support

[gurumark]

It would be great to have a wp-cli support to set the authentication method and save. Thanks!

[kasparsd]

This a great suggestion, thanks @gurumark!

[mikeselander]

👍 on this request. It would be excellent to have the option to turn 2fa options on/off for a specific users or for all users on a site.

If turning it on the only option that you could force would probably be email since it's the only one that doesn't require some user interaction.