issue #19129 created Sales ext which includes some new orms:

- IncidentCustomer with extension to reference customer
- OpportunityCustomer with extension to reference customer
- ToDoCustomer with extension to reference customer
- ProjectCustomer with extension to reference customer
and Extend Account to include reference to Customer.

Modified CRM ext to extend customer to include account relation.

Modified customer orm to create CustomerGroup and CustomerGroupCustomer orms.