Refactor CI with Reusable Workflow

[Locietta]

Use a reusable workflow file to de-duplicate the workflow logic.

By centralizing the workflow configuration, we reduce the risk of errors when updating workflows, especially as we will also add RT branch (#88), manually copying changes across multiple workflow files can be really error-prone.

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Zen3 build is also added here, so we now also have a AMD-specific build. The benefit is still not clear, but in case someone would like to try, I decide to add it.

FYI: We can check each uarch's ability at https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html. From what I can tell, znver3 does mean a little more than x86-64-v3. But the difference between znver3 and znver4 is just some AVX512 capabilities (which is proved no benefit in kernel), so I don't bother to add the latter.