Incorporate the get_available_datasets functionality into the DatasetExplorer

[fealho]

CU-86b7b4wnj, Resolve #473

[sdv-team]

Task linked: CU-86b7b4wnj SDGym - When running a benchmark locally, the additional_datasets_folder path should be the root path #484

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 74.86%. Comparing base (6a3b217) to head (24ccf00).

Files with missing lines	Patch %	Lines
sdgym/dataset_explorer.py	85.71%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #492   +/-   ##
=======================================
  Coverage   74.86%   74.86%           
=======================================
  Files          29       29           
  Lines        2399     2403    +4     
=======================================
+ Hits         1796     1799    +3     
- Misses        603      604    +1     

Flag	Coverage Δ
integration	60.39% <87.50%> (+0.02%)	⬆️
unit	68.78% <25.00%> (-0.58%)	⬇️

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