Oauth fails when no email is linked to account

[lunandd]

Feature request

Problem

Supabase Oauth relies on the assumption that users signing in with Oauth providers have an email linked to their account, which isn't always the case.

Solution

It would be nice if phone numbers could be used instead of email when using Oauth.

Example

An example is Facebook. If users haven't linked an email to their account they're screwed. This may turn off some from my app/website and lead them to using an alternate app/website