[clang] [analyzer] Add time-trace scopes for high-level analyzer steps (PR #125508)

[Oliver Stöneberg via cfe-commits]

firewave wrote:

> It should be relatively easy to add, but I don't want to extend the scope of this PR.

Thanks for the explanation. Yes, please don't extend the scope of the change.

https://github.com/llvm/llvm-project/pull/125508