Update VkStringify to use vulkan.hpp to_string
Update VkStringify to use vulkan.hpp to_string

Rather than occasionally updating VkStringify's table to match
vulkan_core.h, we can use vulkan.hpp's to_string functions to get us the
name of structure types.

vulkan.hpp is such a burdensome file that it makes more sense to only
include it in VkStringify.cpp instead of including it everywhere that
looks at a structure extension list. And since vulkan.hpp uses its own
equivalent equivalent types for every Vk* object, every place that calls
vkhpp::to_string would have to do some clunky static_cast.

I think in the long run, it's easier to maintain vulkan.hpp if we don't
use it directly in our core files.

Bug: b/170962162
Change-Id: Ib0380eaba4d05d9d5127fb0569efa6ef88d0156b
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/49368
Kokoro-Result: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Tested-by: Sean Risser <2d04e98eeaa433fb55534399ab3ab2c06fdf7967@google.com>
Reviewed-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>

bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader