[llvm] [workflows] Add post-commit job that periodically runs the clang static analyzer (PR #94106)

[Tom Stellard via llvm-commits]

tstellar wrote:

@steakhal Thanks for the information.  CodeChecker looks interesting, but setting up a server is a little too much work for me.  

> FYI I also considered contributing something like this, but I found no policies around introducing CI workflows, and I'm aware that even if this is an open-source and well-known project, at the end of the day we probably only have limited CI time and/or some companies pay for that time - like build bots.
> 

We don't have any official policies about adding new CI.  GitHub let's us use up-to 60 concurrent action runners, which it provides for free.  I think if the job is small or it doesn't need to run for every PR then there is probably capacity for t.

> BTW don't we already have some nightly for scan-build? https://llvm.org/reports/scan-build/ Do you plan to replace that?

I think that is generated as part of apt.llvm.org, but I don't plan on replacing it.

https://github.com/llvm/llvm-project/pull/94106