Create native extension to expose `getrusage(RUSAGE_THREAD)`
Following the https://gitlab.com/gitlab-org/gitlab-ee/issues/31887.
Today we can only measure user_s
of the thread with Process.clock_gettime(Process::CLOCK_THREAD_CPUTIME_ID)
.
It would really help if we could get all informations that are available in Process.times
, but for currently running thread.
To do that we have to write native extension to expose that.