CI: Test if we can build puppetboard & install setuptools

[bastelfreak]

In our normal test pipeline, we didn't verify if we can properly build the package. because of that, the last 6.0.0 release failed:

Run python setup.py build sdist bdist_wheel
Traceback (most recent call last):
  File "/home/runner/work/puppetboard/puppetboard/setup.py", line 3, in <module>
    from setuptools.command.test import test as TestCommand
ModuleNotFoundError: No module named 'setuptools'

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.89%. Comparing base (2f21617) to head (c09b0dd).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1202   +/-   ##
=======================================
  Coverage   76.89%   76.89%           
=======================================
  Files          20       20           
  Lines        1307     1307           
=======================================
  Hits         1005     1005           
  Misses        302      302           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[ekohl]

I'm wondering if we need to declare setuptools as a dependency in some way. Or migrate to pyproject.toml. https://packaging.python.org/en/latest/guides/writing-pyproject-toml/ says we can declare setuptools as the build system:

[build-system]
requires = ["setuptools >= 61.0"]
build-backend = "setuptools.build_meta"

No idea if we really need >= 61.0 or any version.

[ekohl]

I'm always a fan of the multi-line version so you can easily add and remove lines with a readable diff

[bastelfreak]

I'm wondering if we need to declare setuptools as a dependency in some way

I do not know enough about python.