ServerTree register actions to be taken to initialise a basic tree of groups on the server
Inherits from: Object : AbstractSystemAction : AbstractServerAction
The singleton ServerTree provides a place for registering functions and objects for
events that should happen when a given server has booted and when all synths are freed.
This is to initialise a basic tree of groups on the server.
See also: Server, ServerQuit, ServerBoot, CmdPeriod
See AbstractServerAction for usage.