Add support for each customer to create their own set of tenants within Displagent. For example, a SaaS company might need this for creating a separate tenant ID for each of their customers that wants to use Displagent.

TBD: This would require selecting a tenant ID when using Displagent.

TBD: Would permissions need to be added to only allow certain users to select a tenant within the app?

TBD: The tenants would all need to be viewable in the master account's/Displagent customer's central web manager dashboard.