OSCReceiverFunction
A storage for functions.
Used for [OSCReceiver].
*new(namespace, funcName, func)
returns new OSCReceiverFunction, which will be executed, if an
OSC-message is processed by an [OSCReceiver] with name Namespace.
The OSC-message has to be in the following style:
namespace funcName arg1 arg2 …
OSCReceiverFunction("/nameSpace", \set, {"test works".postln})
OSCReceiverFunction.at("/nameSpace", \set).value