Flag that tells if the connection has been marked as "ready" by a client calling ClientScene.Ready().
This property is read-only. It is set by the system on the client when ClientScene.Ready() is called, and set by the system on the server when a ready message is received from a client.
A client that is ready is sent spawned objects by the server and updates to the state of spawned objects. A client that is not ready is not sent spawned objects.