refactor: rearrange and add solution for 4-series

src/PepperDash.Essentials.Core/Devices/AudioInterfaces.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Crestron.SimplSharp;
+using Crestron.SimplSharpPro;
+using Crestron.SimplSharpPro.DeviceSupport;
+
+namespace PepperDash.Essentials.Core
+{
+
+	public enum AudioChangeType
+	{
+		Mute, Volume
+	}
+
+	public class AudioChangeEventArgs
+	{
+		public AudioChangeType ChangeType { get; private set; }
+		public IBasicVolumeControls AudioDevice { get; private set; }
+
+		public AudioChangeEventArgs(IBasicVolumeControls device, AudioChangeType changeType)
+		{
+			ChangeType = changeType;
+			AudioDevice = device;
+		}
+	}
+}