Add build CI workflow

[ben9923]

Hey :)

I noticed installing pyminizip is impossible on minimal environments that lack build tools (i.e. python:slim, python:alpine containers).
Figured I'd open a PR to have wheels for this package, to make installation easier for users.

Advantages of shipping wheels

• No build tools (i.e. gcc) are necessary for installation.
• Installation is ~10x faster (~0.38s vs. ~3.7s in a container on my local machine).
• Wheels are 5x smaller than sdists on Windows/macOS (only marginally smaller on Linux for some reason).

Wheel compatibility

Using cibuildwheel is super easy for build automation (Great simple template here) and it only takes a couple of minutes to run.

At least as a start I've set it to build Intel 64-bit CPython wheels, for 3.6-3.11 (all supported versions in cibuildwheel).
Added workflow also has a job for building a source distribution, to have everything needed for a PyPI release :)

Checking info on pypistats.org it seems like >99% of users are Linux Python 3.7+, so almost every user should benefit.
I kept the default manylinux2014 image, as pretty much every Python 3.7 user is compatible with it.
A small amount of users will still not get wheels because they have an old version of pip not supporting manylinux2014 (See stats here).

Anyway - any user with an unsupported platform/old pip will just fallback to the existing behavior and get the sdist.

List of build artifacts

Example build: https://github.com/ben9923/pyminizip/actions/runs/3170412445

pyminizip-0.2.6-cp36-cp36m-macosx_10_9_x86_64.whl
pyminizip-0.2.6-cp36-cp36m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
pyminizip-0.2.6-cp36-cp36m-musllinux_1_1_x86_64.whl
pyminizip-0.2.6-cp36-cp36m-win_amd64.whl
pyminizip-0.2.6-cp37-cp37m-macosx_10_9_x86_64.whl
pyminizip-0.2.6-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
pyminizip-0.2.6-cp37-cp37m-musllinux_1_1_x86_64.whl
pyminizip-0.2.6-cp37-cp37m-win_amd64.whl
pyminizip-0.2.6-cp38-cp38-macosx_10_9_x86_64.whl
pyminizip-0.2.6-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
pyminizip-0.2.6-cp38-cp38-musllinux_1_1_x86_64.whl
pyminizip-0.2.6-cp38-cp38-win_amd64.whl
pyminizip-0.2.6-cp39-cp39-macosx_10_9_x86_64.whl
pyminizip-0.2.6-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
pyminizip-0.2.6-cp39-cp39-musllinux_1_1_x86_64.whl
pyminizip-0.2.6-cp39-cp39-win_amd64.whl
pyminizip-0.2.6-cp310-cp310-macosx_10_9_x86_64.whl
pyminizip-0.2.6-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
pyminizip-0.2.6-cp310-cp310-musllinux_1_1_x86_64.whl
pyminizip-0.2.6-cp310-cp310-win_amd64.whl
pyminizip-0.2.6-cp311-cp311-macosx_10_9_x86_64.whl
pyminizip-0.2.6-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
pyminizip-0.2.6-cp311-cp311-musllinux_1_1_x86_64.whl
pyminizip-0.2.6-cp311-cp311-win_amd64.whl
pyminizip-0.2.6.tar.gz

Upload suggestion

It seems like 0.2.6 == master.
In case it's merged, it would be cool to have those wheels uploaded to PyPI for the current release, instead of waiting for a future release (unless one is planned soon).

I also removed upload.sh which shouldn't really be involved when sdist+wheels are created by CI.

Related to #11

[andife]

I would be really interested in that change. Also python 3.7 is eol 2023-06-27

[ben9923]

Updated the PR with latest cibuildwheel.

@smihica A gentle ping on this one, we'd really love having wheels for pyminizip :)