setActivationPolicy
Sets the activation policy for a given app.
Activation policy types:
'regular' - The application is an ordinary app that appears in the Dock and may have a user interface.
'accessory' - The application doesn’t appear in the Dock and doesn’t have a menu bar, but it may be activated programmatically or by clicking on one of its windows.
'prohibited' - The application doesn’t appear in the Dock and may not create windows or be activated.