Add "Subscription count limit" feature for subscriptions without a user
Right now, the "Subscription count limit" under Product -> Settings applies to the number of subscriptions without a user too. This should not be the case, the number of subscriptions you can create from the Azure Portal, without being assigned to a user, should not be limited to the "Subscription count limit". I understand that this limitation is by design and that currently, this limit applies to a user/product combination. However, subscriptions that have a "null" username should be exempt from this limit. I would suggest having a separate configurable limit here for non-user subscriptions or configuring this number to be unlimited.