[New Quizzes] Allow item banks to be created in and shared with subaccounts

[leward]

Problem statement:

In classic quizzes, question banks can be created at the subaccount level. Subaccount level question banks are available to use any quiz author enrolled in at least one course in the subaccount. In New Quizzes, the Item Banks tool is visible in subaccounts, but banks created there are not automatically shared with the subaccount, nor is there any way to share them with subaccounts. At the current time, the only account with which banks can be shared is the Canvas root account.

Proposed solution:

When Canvas admins create item banks in a subaccount, the bank should automatically be shared with that subaccount and available to New Quiz authors in any course in or beneath that subaccount. If this functionality is not enabled, the Item Banks tool should be removed from all subaccounts. It's presence there is misleading.

User role(s):

admin,instructor

[Hildi_Pardo]

This would be a huge improvement.