Major optimization: Added VmaAllocationObjectAllocator to allocate VmaAllocation objects out of free-list allocator instead of making separate CPU heap allocations.
Major optimization: Added VmaAllocationObjectAllocator to allocate VmaAllocation objects out of free-list allocator instead of making separate CPU heap allocations.

GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator,GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator,GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator