Add option to pickler dumps() for best-effort determinism

[AdrS]

The motivation for this change is Flume caches pickled code and non-determinism breaks the caching. While making pickling fully-determinism is infeasible, increasing the determinism is still useful due to the increase in cache hits. Sets are a common source of non-determinism. This change sorts set elements to provide deterministic serialization. Because not all types provide a comparison operator, the sorting routine implements generic element comparison logic.

See: #34410

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[tvalentyn]

cc: @claudevdm

[tvalentyn]

rerunning tests

[codecov]

Codecov Report

Attention: Patch coverage is 97.93814% with 2 lines in your changes missing coverage. Please review.

Project coverage is 54.63%. Comparing base (10775fe) to head (f2e4c29).
Report is 57 commits behind head on master.

Files with missing lines	Patch %	Lines
sdks/python/apache_beam/internal/set_pickler.py	97.43%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #34698      +/-   ##
============================================
+ Coverage     54.61%   54.63%   +0.02%     
  Complexity     1480     1480              
============================================
  Files          1008     1010       +2     
  Lines        159767   159960     +193     
  Branches       1079     1079              
============================================
+ Hits          87262    87402     +140     
- Misses        70403    70456      +53     
  Partials       2102     2102              

Flag	Coverage Δ
python	81.25% <97.93%> (-0.03%)	⬇️

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