Ubuntu CI

[alexander-g]

Basic CI for Ubuntu including (partial) tests as discussed in #114.
This uses Swiftshader CPU implementation as Vulkan ICD. The precompiled binaries are downloaded from Dropbox, for a long term solution you might want to store them somewhere else.
Only tests that don't require GLSL are run because Swiftshader does not support it.

[axsaucedo]

So fast - looks great, really interesting how simple the setup looks! This is very good, a couple of thoughts / questions:

• Instead of the dropbox link is there a more formal package/source, or could we just add this binary into the repo?
• I see you are currently running the tests that don't require the shader compilation, I think we can merge this initial first, but do you think installing shaderc could be enough to address this in the image?
• Is there a way to run this github action in this PR before merging? Or is that something that will only run once merged?
  Thanks!

[axsaucedo]

I think we can merge this and then we can re-assess how to improve iteratively, as this in itself would be massively useful

[alexander-g]

I could not find official binaries so I've compiled them myself on my device and uploaded to DropBox. Compiling takes quite a long time
I'm not familiar with shaderc so I don't know.

[axsaucedo]

Works like a charm 👍 awesome contribution @alexander-g

[alexander-g]

Glad to help