When performing multiple SDGym runs on the same day, save the artifacts with consistent naming

[R-Palazzo]

Resolve #448
CU-86b72r217

In the screenshot, you can see the code that was run to generate the folder structure. Let me know if it makes sense. The one thing I'm unsure about is the UniformSynthesizer, since it now runs at every benchmark_single_table() call.
I also run it on AWS to check that it's working the same way, here are the results

[sdv-team]

Task linked: CU-86b72r217 SDGym - When performing multiple SDGym runs on the same day, save the artifacts with consistent naming #448

[codecov]

Codecov Report

❌ Patch coverage is 75.51020% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.13%. Comparing base (2a418d3) to head (713effc).

Files with missing lines	Patch %	Lines
sdgym/benchmark.py	79.06%	9 Missing ⚠️
sdgym/result_explorer/result_handler.py	50.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #458      +/-   ##
==========================================
+ Coverage   71.98%   72.13%   +0.14%     
==========================================
  Files          27       27              
  Lines        2174     2189      +15     
==========================================
+ Hits         1565     1579      +14     
- Misses        609      610       +1     

Flag	Coverage Δ
integration	56.72% <65.30%> (+0.17%)	⬆️
unit	66.14% <67.34%> (+0.14%)	⬆️

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[fealho]

Looks good, only 1 small comment.