Added Tobii from 4.23 + updated

Source/TobiiCore/Private/UserGuide/TobiiEditorExtension.h

@@ -0,0 +1,30 @@
+/******************************************************************************
+* Copyright 2017- Tobii Technology AB. All rights reserved.
+*
+* @author Temaran | Fredrik Lindh | fredrik.lindh@tobii.com | https://github.com/Temaran
+******************************************************************************/
+
+#pragma once
+
+#if WITH_EDITOR
+
+#include "../TobiiCoreModule.h"
+
+#include "CoreMinimal.h"
+
+class FTobiiEditorExtension
+{
+public:
+	FTobiiEditorExtension(FTobiiCoreModule* InCoreModule);
+	~FTobiiEditorExtension();
+	void Initialize();
+
+private:
+	FTobiiCoreModule* CoreModule;
+	FDelegateHandle LoadedDelegateHandle;
+	bool bIsEditorInitialized;
+
+	void OnEditorLoaded(SWindow& SlateWindow, void* ViewportRHIPtr);
+};
+
+#endif //WITH_EDITOR