Set up image to sound processing

[allen6chen]

Using Hololens' PhotoCapture api, get the frame the user is looking at.

CopyRawImageIntoBuffer might help with this - instead of storing the photo info as a texture, we just want to do frame analysis. The link shows iterating over the buffer and storing it as a list of colors. This should be pretty useful for our purposes too - we can take the midpoint color (or an average of several colors if we want) and return that

[unoctium1]

https://github.com/VulcanTechnologies/HoloLensCameraStream This seems perfect for us actually