witwin 0.0.1

Add GitHub Action to publish witwin to PyPI

Adds a workflow that publishes the witwin package to PyPI on published releases with tags of the form 'witwin-v<version>' (excluding prereleases). It locates pyproject.toml in the repo root or core/, validates the release tag matches the package name and version, builds distributions using Python 3.11, and uploads them via pypa/gh-action-pypi-publish. This enforces tag/version consistency and automates PyPI releases.