pypi packaging and CI

[Parskatt]

Since we have python bindings, automatically creating and pushing python wheels to pypi for linux/mac/windows would be nice.

We could also automatically test that the builds pass the tests in the posetest suite.

[vlarsson]

For integrating https://github.com/vlarsson/posebench as a regression test, maybe we should select a smaller subset of the datasets to run. As I understand it, we would need to download the data each time we run the CI? I am not sure if there are any limitations on this?

[pablospe]

would it make sense that posebench is part of this repo as well (with conditional compilation as the already benchmark included)?

[vlarsson]

I think I would rather have it as a separate repository. But I guess it should be possible to just clone it in the actions?

[zsz00]

Hope to update the version on pyi to the latest @vlarsson