Add capabilities to organization REST API

Current missing capabilities:

1. Not able to search for Atlassian account ID based on search query such as email address

There is an API provided by Jira cloud /rest/api/3/groupuserpicker?query=query but the account ID cannot be returned if the account does not have access to the site.

• Suggestion : Allow to extract Account ID information based on search by email address via the organization rest API: GET /admin/v1/orgs/{orgId}/users/search?query=email_address
• Workaround : Load the managed accounts data via the GET /admin/v1/orgs/ORG_ID/users/ endpoint and search for the accountID

2. No way to use Rest APIs to obtain a list of users and their associated sites/products/applications (in order to better audit and manage license consumption, especially for customers on annual billing)

• Suggestion: Propose that Org REST API include endpoints to include this information, the same way that it is possible to obtain via the Export accounts button, present on Organization > Directory > Managed Accounts

3. No way to retrieve the license limit and usage.

• Suggestion : Provide an API that can return the license information and usage per product in each site, Enterprise and Atlassian Access. 
• Suggestion: Provide an API to return distinct users of an enterprise plan per product, the same way that it is possible to obtain via the Export button, present on Organization > Products > User counts > select View on a product

4. MFA status of users in the organization

• Workaround: export managed users in the admin page