moved more traits from engine into mods

OpenRA.Game/Traits/Valued.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRA.Traits
+{
+	public class ValuedInfo : TraitInfo<Valued>
+	{
+		public readonly int Cost = 0;
+	}
+
+	public class TooltipInfo : TraitInfo<Tooltip>
+	{
+		public readonly string Description = "";
+		public readonly string Name = "";
+		public readonly string Icon = null;
+		public readonly string[] AlternateName = { };
+	}
+	
+	public class Valued { }
+	public class Tooltip { }
+}