Unified mouse movement handling

base/vulkanexamplebase.h

@@ -69,6 +69,7 @@ private:
 	vks::UIOverlay *UIOverlay = nullptr;
 	// Called if the window is resized and some resources have to be recreatesd
 	void windowResize();
+	void handleMouseMove(int32_t x, int32_t y);
 protected:
 	// Frame counter to display fps
 	uint32_t frameCounter = 0;