RFE: Allow using setuptools and wheel wheels from a custom directory for tests

[hroncok]

Bug report

In Fedora, we would like to use our wheels instead of the ones bundled/vendored in Lib/test.
Ideally, we could reuse the --with-wheel-pkg-dir configure option for this.

Your environment

• CPython versions tested on: 3.12.0b1
• Operating system and architecture: Fedora Linux, all architectures

This is an issue for #105056

Linked PRs

• gh-105084: Tests: Use setuptools+wheel from sysconfig.get_config_var('WHEEL_PKG_DIR') if set #105056
• [3.12] gh-105084: Tests: Use setuptools+wheel from sysconfig.get_config_var('WHEEL_PKG_DIR') if set (#105056) #105424

[lysnikolaou]

Thanks @hroncok for the push on this!