CI: Add cibuildwheel GitHub Actions workflow

[matthewfeickert]

• Add GitHub Actions based workflow that uses cibuildwheel to build wheels for target platforms.
• Add upload of wheels to PyPI on publish using Trusted Publishers.

This workflow copies heavily from the one @henryiii setup for https://github.com/scikit-hep/boost-histogram.

Addresses following components of Issue https://github.com/pytries/datrie/issues/104:

• setup cibuildwheel to build the full matrix of wheels so users don't have to have a compiler installed
• setup PyPI trusted publisher to automate releases (will require @tacaswell to do this on the PyPI side)

Requires PR https://github.com/pytries/datrie/pull/107 to go in first.

[matthewfeickert]

@tacaswell this is ready for review now (thanks for merging PR #107).

[matthewfeickert]

👋 Ping @tacaswell.

[peterfarrell]

This would be welcome improvement for us.

[tacaswell]

I'll sort out the pypi side and merge this in the next week.

[matthewfeickert]

I'll sort out the pypi side and merge this in the next week.

@tacaswell sounds good and thanks!

For the last remaining bit after that in Issue #104

setup automatic version number based on tags

I think this can be done similarly to how we're doing things in https://github.com/scikit-hep/scikit-hep-testdata and https://github.com/scikit-hep/boost-histogram, which is just to use purefly dynamic version metadata.