## Is your feature request related to a problem?

We manage around 20 3rd party tools that our internal users can log into using G Suite (part of your enterprise / scale offering). When a user leaves, we need to disable their account. Currently we need to do this in G Suite and then any of the 3rd party tools where password login is still possible.

## Describe the solution you'd like

When a user leaves, we disable their account in G Suite and their account in PostHog becomes disabled too. Essentially, the ability to restrict specific users in PostHog to only be able to login via SSO (defaulting to this setting).

## Describe alternatives you've considered

Manually removing their account, and being the enemy of our IT manager.

## Additional context



#### *Thank you* for your feature request – we love each and every one!

ee/api/test/test_authentication.py
self.client.logout()
        
        organization = Organization.objects.create(name="New Co.", domain_whitelist=["posthog.com"])
        with self.settings(**MOCK_SETTINGS):
            response = self.client.get("/login/saml/?idp=posthog_custom")
        self.assertEqual(response.status_code, status.HTTP_302_FOUND)
        _session = self.client.session
        _session.update(
            {"saml_state": "ONELOGIN_87856a50b5490e643b1ebef9cb5bf6e78225a3c6",}
        )