Support for hundreds of tenants

[mathiasconradt]

Related in regards to automated tenant creation:

Management API to create a tenant and to install and configure an Extension

As for #1, note that you could consider RPA / Robotic Process Automation for creating a tenant. RPA usually comes into play for scenarios where there is no API available. Note that this is neither official Auth0 guidance nor officially supported. But if interested, I did play around with Robot Framework this week (mainly to learn robotframework and was looking for a useful use case) and took this as a test scenario.