Add OuterRadius debug overlay to Rectangle and Capsule

Circle obviously doesn't need it now (might change with the introduction of offsets, but we can still add it when that happens).

OpenRA.Mods.Common/HitShapes/Rectangle.cs

@@ -13,6 +13,7 @@ using System;
 using System.Drawing;
 using System.Linq;
 using OpenRA.Graphics;
+using OpenRA.Mods.Common.Graphics;
 using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.HitShapes
@@ -139,6 +140,8 @@ namespace OpenRA.Mods.Common.HitShapes
 				wcr.DrawPolygon(vertsTop.ToArray(), 1, Color.Yellow);
 				wcr.DrawPolygon(vertsBottom.ToArray(), 1, Color.Yellow);
 			}
+
+			RangeCircleRenderable.DrawRangeCircle(wr, actorPos, OuterRadius, 1, Color.LimeGreen, 0, Color.LimeGreen);
 		}
 	}
 }