Utilities related to the new version 3 Audio Units

[FredAnton]

Since the beginning of the version 3 Audio Unit APIs, the AudioUnitV3Example provided by Apple has been an amazing reference point for any developer building its own AUv3 instruments or effects. Every single line has its worth! Thank you Apple for providing such samples.

Like many AuV3 developers I've developed some features on top of this sample. I would like to share them with you, have a look on https://github.com/FredAntonCorvest/Common-AudioUnit-V3

I'll keep on updating when I have new utilities to share.