layers:Refactor QueueWaitIdle
layers:Refactor QueueWaitIdle

Update QueueWaitIdle in core_validation to use Pre/Post pattern.

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers