Consider adding a workflow to publish to PyPi on tagged commit

[BeethovenKodar]

Something like this would most likely work on encountering a tagged commit:

---
name: Publish Python package to PyPI

on: [push]
jobs:
  build:
    name: Build distribution
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.x"
      - name: Install pypa/build
        run: >-
          python3 -m pip install build --user
      - name: Build a binary wheel and a source tarball
        run: python3 -m build
      - name: Store the distribution packages
        uses: actions/upload-artifact@v4
        with:
          name: python-package-distributions
          path: dist/

  publish-to-pypi:
    name: >-
      Publish Python distribution to PyPI
    if: startsWith(github.ref, 'refs/tags/')
    needs:
      - build
    runs-on: ubuntu-latest
    environment:
      name: pypi
      url: https://pypi.org/p/python-openvpn-client
    permissions:
      id-token: write
    steps:
      - name: Download all the dists
        uses: actions/download-artifact@v4
        with:
          name: python-package-distributions
          path: dist/
      - name: Publish distribution to PyPI
        uses: pypa/gh-action-pypi-publish@release/v1

  github-release:
    name: >-
      Sign the Python distribution with Sigstore
      and upload them to GitHub Release
    needs:
      - publish-to-pypi
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: write
    steps:
      - name: Download all the dists
        uses: actions/download-artifact@v4
        with:
          name: python-package-distributions
          path: dist/
      - name: Sign the dists with Sigstore
        uses: sigstore/gh-action-sigstore-python@v2.1.1
        with:
          inputs: >-
            ./dist/*.tar.gz
            ./dist/*.whl
      - name: Create GitHub Release
        env:
          GITHUB_TOKEN: ${{ github.token }}
        run: >-
          gh release create '${{ github.ref_name }}'
          --repo '${{ github.repository }}' --notes ""
      - name: Upload artifact signatures to GitHub Release
        env:
          GITHUB_TOKEN: ${{ github.token }}
        run: >-
          gh release upload '${{ github.ref_name }}' dist/**
          --repo '${{ github.repository }}'