layers: incremental_present rectangle validation
layers: incremental_present rectangle validation

In core_validation verify the offset, extent & layer values for each
VkRectLayerKHR struct passed into vkQueuePresentKHR() for the
VK_KHR_incremental_present extension.

Change-Id: I4aa7cbac61afa6f4c9e733bb51cd486aadab5cec

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools