Pin `twine` and `packaging` versions in build job to match bundled
versions in `gh-action-pypi-publish` v1.14.2.
Enforce Core Metadata 2.4 in wheel and sdist targets with verification
in validation scripts.
Fixes#22903
Add initial Python package support for NetBox, including wheel and sdist
builds, generated package metadata, and Test PyPI publishing for maintainer
validation.
Add package-aware CLI support, `netbox setup` scaffolding for instance-local
files, and centralized wheel-vs-checkout path handling while preserving the
existing source/archive install layout.
Bundle pre-rendered embedded documentation in the wheel, and extend CI to
verify dependency pins, wheel metadata, artifact contents, CLI behavior, sdist
rebuilds, and smoke-test upgrades.
Martin Hauser