[Profiler][Minor] Add typed visit method to Result. (#82993)
Often in post processing we want to step into a specific typed context: "If X is a torch op, do Y". This PR simply adds an ergonomic way to write such cases.
Differential Revision: [D38426341](https://our.internmc.facebook.com/intern/diff/D38426341/)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82993
Approved by: https://github.com/chaekit
