added VoiceInfo stuff

OpenRa.Game/GameRules/VoiceInfo.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRa.Game.GameRules
+{
+	class VoiceInfo
+	{
+		public readonly string[] SovietVariants = { ".aud" };
+		public readonly string[] AlliedVariants = { ".aud" };
+		public readonly string[] Select = {};
+		public readonly string[] Move = {};
+		public readonly string[] Attack = null;
+	}
+}