Feature: Add Homebrew as a way to get build dependencies installed on Linux

[brettcannon]

Describe the enhancement or feature you would like

https://devguide.python.org/getting-started/setup-building/#install-dependencies for Linux could include using Homebrew to get the build dependencies for Linux. See the python formula for the packages to install.

Describe alternatives you have considered

No response

Additional context

No response

[hugovk]

See also python/cpython#148335 to put all the Homebrew deps into a single file, and you can just install that.

We just need to bikeshed a location :)

[brettcannon]

If/once the Brewfile in python/cpython#148335 lands with Linux support, then we can do something about this PR.