layers: Add alias support to kVulkanObjectTypes
layers: Add alias support to kVulkanObjectTypes

Updated vk_object_types.h generation to correctly handle promoted and
alias handle types.

Change-Id: I3d655b0f408a6cee08bf3d1ce453d9c5aac61376

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