Remove temporary directory when all intermediate files are deleted

[camposandro]

If the user provides a temporary directory that was created outside of the output directory, and all intermediate parquet / resume log files have been deleted at the end of the pipeline, remove that same directory. Closes #298.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.73%. Comparing base (d87041a) to head (42a9877).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #382   +/-   ##
=======================================
  Coverage   99.73%   99.73%           
=======================================
  Files          26       26           
  Lines        1496     1507   +11     
=======================================
+ Hits         1492     1503   +11     
  Misses          4        4           

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[delucchi-cmu]

Minor docstring comment. Otherwise LGTM.