Descriptor Indexing Tests are missing test cases covering atomics

[Jasper-Bekkers]

Hi all,

It appears that there are (almost) no tests that cover atomics on data that's accessed through descriptor indexing and it appears to be breaking on some vendors. I am under the impression that doing this should be possible.

There are some tests that cover specifically integer atomics on images, but none that cover atomics in buffers and nothing that adds nuri on top for example. Atomics also aren't tested in shader stages other then compute.