Update to Vulkan 1.3.240

[serenity4]

This uses the latest Clang version, which showed no difference in the generated wrapper (tested for the Linux wrapper) before the update to 1.3.240.

I also removed a bunch of const annotations to facilitate tweaking the generator while prototyping.

TODO:

• Remove deved specification for Clang (see Fix use of wrong variable in get_pkg_artifact_dir JuliaInterop/Clang.jl#415)
• Test correct wrapping on Vulkan.jl

[serenity4]

It seems like there are a few issues with finding libvulkan on MacOS, I don't know if that's a file permission issue or a wrong library name or a missing library include path. This guide (though perhaps a bit outdated) seems to indicate the use of libvulkan.1.dylib as library name, but setting this CI had no effect.

EDIT: I just realized it was already captured in #37.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (97959a1) 34.42% compared to head (861ecb6) 33.87%.
Report is 2 commits behind head on master.

❗ Current head 861ecb6 differs from pull request most recent head f09d780. Consider uploading reports for the commit f09d780 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #48      +/-   ##
==========================================
- Coverage   34.42%   33.87%   -0.56%     
==========================================
  Files           3        3              
  Lines          61       62       +1     
==========================================
  Hits           21       21              
- Misses         40       41       +1     

Files	Coverage Δ
src/LibVulkan.jl	72.72% <0.00%> (-7.28%)	⬇️

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[serenity4]

Windows CI timed out during the installation of the SDK, it might be that the .exe requires interaction of some sort, though it used to be working fine before.

[serenity4]

Alright, it got me some time (with a distraction under the form of https://github.com/serenity4/VulkanSpec.jl) but this PR is tested and ready now :)

FYI, the Vulkan Video bindings are only for decode operations, which are no longer provisional, and encode operations (which are still provisional) are not included. Therefore it should be in line with our discussion in #43.

I may update to v1.3.266 (or whatever will be the latest) soon after this PR, but if that is the case, it's anyways good to make incremental changes.

[serenity4]

(@Gnimuc if you have time to review, that would be fantastic, but otherwise it's alright - I am reasonably confident that I can merge this in the current state)

[Gnimuc]

The generator script looks good to me.

[Gnimuc]

We may fix the Windows CI in the future though. (The last time I tried, it was still hard to debug the CI environment...)

[serenity4]

Thanks! Yep, eventually we should try to get Vulkan to work reliably on all platforms. I've been trying to put the validation layers in Yggdrasil, but it's not an easy one.