Could not find the native OpenAL library on MacOS

I have a problem with `AudioEngine.CreateDefault()` trying to find the OpenAL library. (I'm using a Mac)
I think a simple enough fix would be to add `/System/Library/Frameworks/OpenAL.framework/OpenAL` to the library search path like [OpenTK.OpenAL](https://github.com/opentk/opentk/blob/master/src/OpenAL/OpenTK.OpenAL/OpenALLibraryNameContainer.cs) does... or maybe you just want to use OpenTK.OpenAL (or some other OpenAL bindings) instead to avoid manually binding OpenAL yourself?
P.S. `AudioEngine.CreateDefault()` doesn't tell you/warn that it can return null.