Update the noxfiles with performance enhancements to support debugging.

[chalmerlowe]

Update the noxfiles with performance enhancements to support debugging.

• Add session.run('python', '-m', 'pip', 'freeze') immediately after the last session.install() call in each session.
• Add *session.posargs, as the last item in session.run() that launch pytest.
  This allows calls such as nox -s unit -- -vv to produce verbose test results OR nox -s unit -- --lf to only execute the tests that failed in the last session.

Consider whether a similar *session.posargs, would be beneficial in any of the other sessions to selectively allow us to feed args to tools like black, ruff, etc)