O3 with Authentication module: Demo

Hi all,

Short Loom demos of O3 login working with openmrs-module-authentication: TOTP after password, secret question after password, and password-only when 2FA is off.

Feedback welcome: anything that looks wrong, confusing UX, or missing for implementers configuring these schemes.

CC @jayasanka @janithrs @chibongho @dennis @veronica