create Callback Function
fun createCallbackFunction(functionType: A_Type, callbackFunction: (argumentsTuple: A_Tuple, completion: CallbackSystem.CallbackCompletion, failure: CallbackSystem.CallbackFailure) -> Unit): A_Function
Create an A_Function from the given Callback and function A_Type.
Return
The Avail A_Function.
Parameters
function Type
The signature of the A_Function to create.
callback Function
The Kotlin function from which to build a Callback to invoke when the corresponding Avail function is invoked.