Add/Remove Appsheet's User via API

[DucV]

I think It is better if we can have a way to automate add/remove Appsheet's User via API. It would be great if we do so by using Apps script. 

The more a company or a AppSheet partner having a lot of Appsheet, The more need to automate the Appsheet's users management. 

Below is example scenarios in detail:

• An public user see the Appsheet App. He want to use it immediately.
• The appsheet's partner ask him to sign up to use. 
• As soon as he submit the form, he will be auto grant the permission to use for a specific appsheet app. By doing this, the Appsheet's partner can focus on the advertisment they valueable app. 

In term of using in internal company, this feature also help the admin to easy to add or remove a specific user in/out a specific internal App.