Force V-Sync via command line (windows)

base/vulkanexamplebase.h

@@ -57,6 +57,8 @@ private:
 	bool enableValidation = false;
 	// Set to true when the debug marker extension is detected
 	bool enableDebugMarkers = false;
+	// Set tot true if v-sync will be forced for the swapchain
+	bool enableVSync = false;
 	// fps timer (one second interval)
 	float fpsTimer = 0.0f;
 	// Create application wide Vulkan instance