Moved game state into its own header

Nuake/Source/Engine.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "Nuake/Core/Core.h"
+#include "Nuake/Core/GameState.h"
 #include "Nuake/Core/Logger.h"
 #include "Nuake/Window.h"
 #include "Nuake/Core/MulticastDelegate.h"
@@ -13,14 +14,6 @@ namespace Nuake
 	class EngineSubsystem;
 	class EngineSubsystemScriptable;
 
-	enum GameState
-	{
-		Loading,
-		Playing,
-		Paused,
-		Stopped
-	};
-
 	class Engine 
 	{
 	public:

Nuake/Source/Nuake/Core/GameState.h

@@ -0,0 +1,12 @@
+#pragma once
+
+namespace Nuake
+{
+	enum GameState
+	{
+		Loading,
+		Playing,
+		Paused,
+		Stopped
+	};
+}