Batch Import Users to Organization

Feature: Add an option to batch add members to an organization during user import or directly at the organization level.

Description: There is no built in process within the Auth0 dashboard to import users to an organization at scale. All options require a user by user manual process or writing custom code to use the API.

Use-case: During an import for users via the json file, there should be an organization option that allows you to onboard the users to the appropriate organization. This expedites onboarding and eliminates requiring custom code to run this file through the API.

This additionally allows users from different orgs to be shared in the same user database and onboarded to the proper organization while being able to keep auto-membership disabled. Why would you want to disable auto-membership and require this feature instead? Because multiple database/organizations within the same application is not a supported workflow. There would be no way to allow for auto membership with this current limitation and so at least having a batch import of users to an org would fit in with this current limitation and speed up the onboarding experience.