CI: Add workflow to build Python wheels

[glensc]

Fixes:

• Add more wheels to pypi #63

Refs:

• Upload wheels to PyPI #21
• Upload wheels to PyPI #21 (comment)
• https://github.com/pypa/manylinux
• https://quay.io/organization/pypa
• https://github.com/docker/setup-qemu-action

[glensc]

@sdelafond are you going to squash merge again this, or I will try to make reasonable commits?

[sdelafond]

@sdelafond are you going to squash merge again this, or I will try to make reasonable commits?

At this point I'll most likely end up squashing it, but in general it'd be good to open the PR only after you get everything sort of working in your fork :)

[glensc]

maybe makes sense to always build the artifacts? i.e. to see that the changes in PR didn't break anything and release build would succeed. could omit uploading the artifacts.

[glensc]

Also, do you need merged artifacts?

[glensc]

It should be feature-ready from my side.

[sdelafond]

I'll let the dust settle a bit, and will review it later on: right now it keeps changing on me every other second which makes it harder than it should be :)

[glensc]

Since you said you'll consider not-squashing, cleaned up the commits :)

[sdelafond]

The rest looks all good.

[sdelafond]

Thanks a lot for your contribution!