Improve the documentation of profiling with "perf maps"

The documentation lives here: https://github.com/python/cpython/blob/d6cf05b5d00abbfdf9008d646c14c6ef7c83b61a/Doc/howto/perf_profiling.rst

Before #136461, cpython only had support for Linux perf profiling. But with this PR it now supports both Linux and macOS through samply. I updated the documentation to include this, but it's not super great currently because previously it was written with the assumption that it was only supported by Linux perf. So it would be good to restructure this doc in a better way, and add more information related to macOS profiling using samply.

Also samply supports both perf modes so it would be good to clarify when to use them.

cc @pablogsal @hugovk

從 Doc/howto/perf_profiling.rst 開始，並檢視 PR #136461 中的變更，以了解目前 Linux perf 和 macOS samply 的支援範圍。比較 samply 支援的 perf 模式，並重新組織指南，使平台支援、設定和模式選擇清楚明確。完成標準是文件準確說明如何在 Linux 和 macOS 上進行 profiling，以及何時使用每種模式。