[llvm] [libc] add multi-platform pre-commit github actions (PR #119104)

[Schrodinger ZHU Yifan via llvm-commits]

SchrodingerZhu wrote:

GHAC does not like to handle too many requests. I think this makes the `mozilla/sccache` ghac storage approach actually not a good fit for its purpose. Switching to the ccache action with sccache variant.

https://github.com/llvm/llvm-project/pull/119104