Move GameScriptMirror, GameScriptSinkInfo and GameScriptSkyLayer to Scripting.

Scripting/include/GameScriptSkyLayer.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "GameScriptColor.h"
+
+namespace sol {
+	class state;
+}
+
+struct GameScriptSkyLayer
+{
+	bool Enabled{ false };
+	byte R{ 0 };
+	byte G{ 0 };
+	byte B{ 0 };
+	short CloudSpeed{ 0 };
+
+	GameScriptSkyLayer() = default;
+	GameScriptSkyLayer(GameScriptColor const & col, short speed);
+	void SetColor(GameScriptColor const & col);
+
+	static void Register(sol::state *);
+};
+