Make a more extensive wrapper class for Native.Mix_Chunk

[JamDoggie]

Currently the project I am working on requires me to play sound samples in real time as I need to, however the only possible way to play sound samples with the Mixer wrapper currently is to load a sound file. The issue is, i'm wanting to play samples coming from an input device, however the MixChunk class currently doesn't let you set a custom byte array of sound data. Infact it doesn't really allow you to do much at all, it just seems to be kinda there to make stuff work.