Added Tobii from 4.23 + updated

Source/TobiiCore/Private/TobiiPlatformSpecific.h

@@ -0,0 +1,39 @@
+/******************************************************************************
+* Copyright 2017- Tobii Technology AB. All rights reserved.
+*
+* @author Temaran | Fredrik Lindh | fredrik.lindh@tobii.com | https://github.com/Temaran
+******************************************************************************/
+
+#pragma once
+
+#include "CoreMinimal.h"
+
+class FTobiiPlatformSpecific
+{
+public:
+	static void* GetMonitorInformation(const void* GameWindowHandle, int& MonitorWidthPx, int& MonitorHeightPx);
+	static void* MonitorHandleFromDeviceName(FString DeviceName);
+	
+	static bool ConvertGazeCoordinateToVirtualDesktopPixel(void* GameWindowHandle, const FVector2D& ClientCoordsUNorm, FIntPoint& OutVirtualDesktopPixel);
+}; 
+
+#if PLATFORM_WINDOWS
+#include "Windows/WindowsApplication.h"
+#include "HAL/ThreadSafeBool.h"
+
+class FTobiiPlatformNotifications : public IWindowsMessageHandler
+{
+public:
+	FTobiiPlatformNotifications();
+	virtual ~FTobiiPlatformNotifications();
+
+	virtual bool ProcessMessage(HWND hwnd, uint32 msg, WPARAM wParam, LPARAM lParam, int32& OutResult) override;
+
+public:
+	FThreadSafeBool bShouldForceEyetrackerReconnect;
+	FThreadSafeBool bShouldUpdateGameMonitorHandle;
+	
+};
+#elif PLATFORM_MAC
+#else
+#endif