Vulkan device creation with VkPhysicalDeviceFeatures2

There is no option to set VkPhysicalDeviceFeatures2 on Vulkan device creation function. In the QVulkanWindow class, there is an override provided for VkPhysicalDeviceFeatures, we need similar override for VkDeviceCreateInfo::pNext so we can assign VkPhysicalDeviceFeatures2 structure. This should be very simple job