CI: add test for building sdist and wheel packages

[mwtoews]

This CI workflow essentially checks python -m build to see if it builds sdist and wheel packages.

[snowman2]

This will be nice to have, thanks 👍

[codecov[bot]]

Codecov Report

Merging #536 (129462c) into master (39c9189) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #536   +/-   ##
=======================================
  Coverage   96.22%   96.22%           
=======================================
  Files          13       13           
  Lines        1591     1591           
=======================================
  Hits         1531     1531           
  Misses         60       60           

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[snowman2]

Thanks @mwtoews 👍