Add hotpath to profiling section

[pawurb]

Hi. I've recently released https://github.com/pawurb/hotpath . It's a simple to use profiler focused on discovering memory and timing bottlenecks. It received some positive feedback and over 700 gh stars in just a few weeks after the release. Maybe you could include it in the profiling section?

[pawurb]

Hi, I've since expanded the lib significantly and added better docs on https://hotpath.rs/, including comparison with sampling profilers. Hope that helps.

[nnethercote]

I looked over the docs. It seems you have to instrument individual functions to get any measurements, is that right? This seems like a problem when dealing with large programs.

[pawurb]

Hi, yes it requires manual instrumentation.

[pawurb]

BTW, there's also hotpath::measure_all macro that allows instrumentation per mod/impl block, reducing config overhead.