Expose AudioOutput.SupportPositionalAudio

[andriworld]

Is your feature request related to a problem? Please describe. I am adding an AudioOuput component to my audio sources programmatically (for VR multichannel playback) and need to be able to configure it programmatically.

Describe the solution you'd like Could you please expose the SupportPositionalAudio bool property so I can set it programmatically?

AudioOutput.cs line 48 (AVPro Video v2.6.7)

		public bool SupportPositionalAudio
		{
			get { return _supportPositionalAudio; }
			set { _supportPositionalAudio = value; }
		}

Describe alternatives you've considered I have already made the code change myself locally, so I an NOT blocked.

Thank you!