exchange version string generation from versioneer to setuptools-scm

[ekneg54]

TODO:

• use setuptools_scm for version generation
• fix tests that depend on get_version by reimplementing it
• exclude unneeded files from package
• fix version for containerbuilds

closes #533
closes #549

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.38%. Comparing base (a326605) to head (6222f2a).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #549      +/-   ##
==========================================
+ Coverage   92.49%   94.38%   +1.89%     
==========================================
  Files         145      143       -2     
  Lines       10245     9885     -360     
==========================================
- Hits         9476     9330     -146     
+ Misses        769      555     -214     

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[ppcad]

When running the pex for this pull-request I get version 0.1.dev1+g3650834.
Is that the desired behavior?

[ekneg54]

It is not the desired behavior for sure :)
But pex build will be deleted in near future as I've heard ;)
Do you think it is worth it to fix this?