[llvm] [DebugCounter] Add support for non-continous ranges. (PR #89470)

[Jon Roelofs via llvm-commits]

jroelofs wrote:

now that the `-skip`/`-count` syntax are no longer supported there is a comment in `llvm/utils/bisect-skip-count` that should be updated.

https://github.com/llvm/llvm-project/pull/89470