`MembershipRole` type replaced by `OrganizationCustomRoleKey` type

The MembershipRole type was replaced with OrganizationCustomRoleKey (related to roles and permissions). An example of where this type might be found:

import { useAuth } from '@clerk/clerk-react';

const { orgRole } = useAuth();

To support the existing roles admin, basic_member, and guest_member apply interface merging using the following snippet:

interface ClerkAuthorization {
  permission: ''
  role: 'admin' | 'basic_member' | 'guest_member'
}