successful update to Vulkan version 1.3.239, working very reliably.

Hey! Thanks for the PR; I'll need some time to comprehend the changes :)

Few points:

1. moltenVK seems to have the support of 1.2, as stated on their GH. Need to check if that's true, also, not sure how much of a difference is between 1.2 and 1.3. Needs investigation

2. I am running macOS too, so will check the crashes

3. Did you try to generate using the latest c-for-go? I saw that you had to revert to the version from 2018.. Ideally if we debug crashing, better debug it using newer c-for-go ;)

4. Bazel seems like a good tool, but need to be sure that the package remains go-gettable. I'm fine if it's using tags (e.g. tags to switch between system-wide installation and provided artifacts).

Otherwise, good job on trying to keep this project up to date! Additional interest motivates me to return some day to these projects :D Spent too much time in the world of commercial development, time to revive hobby projects of the past, I guess...

Yes I did have to revert to c-for-go 2018 -- I didn't try anything in between once the old version worked. There is some relevant discussion from another user in the issue there or a related issue -- I believe she reported it might have been fixed, but I haven't tried anything.

The good news not reflected in these PR comments perhaps is that everything is working quite reliably on a daily basis for my intensive use of the vulkan code, and across various collaborators and students on the 3 major platforms -- so from an empirical perspective, we're "all good" here! Would be great to get this stuff pushed upstream and supported with the latest c-for-go. I'll certainly be ready to give it a good test.

Here's my attempt to provide a layer on top of vulkan in case you're interested in taking a look at that: https://github.com/goki/vgpu -- your example code in asche was very helpful!

The last thing that we really need to make go-vulkan easily usable on mac is some easy way of installing the vulkan and molten-vk dependencies so that people don't have to download the SDK -- the homebrew effort on that front seems to have hit a wall of some sort..

any updates on what's going on with this PR or where it's headed? it'd be nice to get this stuff merged at some point, maybe with another update to match current vulkan releases, since it doesn't seem like the refactor xlabs was after is going to happen any time soon.