Make and distribute for each release a binary that bundles the Python interpreter, for each supported platform.

Not yet sure what will be needed precisely to achieve that, but here are some rough pointers:

• make a GitHub Actions workflow to auto push to PyPi on GitHub new release.
• use pyInstaller to make frozen builds?
• to make multi-platforms builds, maybe combine with cibuildwheel?
• automate the building and distribution process (attaching standalone binaries on GitHub Releases) by using a GitHub Actions Workflow?