Build spirv-reflect and spirv-cross from source and add a trunk version

[spencer-lunarg]

From adding a few Vulkan SDK versions, I have found the spirv-reflect and spirv-cross used for the SPIR-V language might be better to be like SPIRV-Tools and have us build from source nightly and just add a trunk version

I would be happy to help, just not sure how to.

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For SPIRV-Reflect the build is very easy (and quick)

git clone git@github.com:KhronosGroup/SPIRV-Reflect.git
cd SPIRV-Reflect
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

then the binary is always just put into a bin/ folder (SPIRV-Reflect/bin/spirv-reflect)

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For SPIRV-Cross is the same build workflow (and also quick)

git clone git@github.com:KhronosGroup/SPIRV-Cross.git
cd SPIRV-Cross
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

and the spirv-cross binary is just in the build/ folder (SPIRV-Cross/build/spirv-cross)