## 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!

posthog/api/test/test_signup.py
count: int = User.objects.count()
        team_count: int = Team.objects.count()
        org_count: int = Organization.objects.count()
        required_attributes = [
            "first_name",
            "email",
            "password",
        ]
        for attribute in required_attributes:
            body = {
                "first_name": "Jane",
                "email": "invalid@posthog.com",
                "password": "notsecure",
            }
            body.pop(attribute)
            
            response = self.client.post("/api/signup", body)
            self.assertEqual(response.status_code, status.HTTP_400_BAD_REQUEST)
            self.assertEqual(