Add Lua standard library and supporting C#/yaml

OpenRA.Mods.RA/Scripting/LuaScriptEvents.cs

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+#region Copyright & License Information
+/*
+ * Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Scripting
+{
+	public class LuaScriptEventsInfo : TraitInfo<LuaScriptEvents> { }
+
+	public class LuaScriptEvents : INotifyKilled, INotifyAddedToWorld, INotifyRemovedFromWorld
+	{
+		public event Action<Actor, AttackInfo> OnKilled = (self, e) => { };
+		public event Action<Actor> OnAddedToWorld = self => { };
+		public event Action<Actor> OnRemovedFromWorld = self => { };
+
+		public void Killed(Actor self, AttackInfo e)
+		{
+			OnKilled(self, e);
+		}
+
+		public void AddedToWorld(Actor self)
+		{
+			OnAddedToWorld(self);
+		}
+
+		public void RemovedFromWorld(Actor self)
+		{
+			OnRemovedFromWorld(self);
+		}
+	}
+}