SMS code prelogin

This route triggers the system to send an SMS to the user and is the first step when authenticating using the sms otc passwordless mechanism. Send the frontegg-vendor-host as a header to declare which vendor. This is your domain name in the Frontegg Portal ➜ Workspace Settings ➜ Domains ➜ Domain Name. Send the user's email as POST body params. Include the invitation token if the user is signing up by invitation. Send the recaptcha token if the recaptcha is enabled for login.