[vulkan] ABI independence of Vulkan handles

bug: 111137294
bug: 119685647

This CL takes new autogenerated code for VkEncoder,
while plugging in the ABI-independent versions of
the Unwrap and Create Vulkan handle mappings.

goldfish_vk-specific Vulkan structs have been revised
to explicitly specify that the host-side Vulkan object
is a uint64_t.

Change-Id: I0d5b057692c10b3108093c5d8e3a6bab7a316916
5 files changed