test(python): Set up TPC-H benchmark tests

[stinodego]

Changes

• Add benchmark tests for the 22 TPC-H queries on a small scale factor (0.01).

I vendored only the compiled binary dbgen, instead of all files and folders that come with the TPC-H dbgen tool. That saves some clutter but this does not run under Windows. Can revisit later if desired.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.89%. Comparing base (4b23768) to head (d65c1ac).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #15908   +/-   ##
=======================================
  Coverage   80.89%   80.89%           
=======================================
  Files        1384     1384           
  Lines      178020   178020           
  Branches     3043     3043           
=======================================
+ Hits       144003   144008    +5     
+ Misses      33535    33530    -5     
  Partials      482      482           

Flag	Coverage Δ
python	74.36% <ø> (+<0.01%)	⬆️
rust	78.02% <ø> (+<0.01%)	⬆️

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