Add test that runs benchmark locally

[PGijsbers]

Also some formatting/typing to allow pre-commit to pass.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 27.85235% with 215 lines in your changes missing coverage. Please review.

Please upload report for BASE (master@586357f). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
amlb/runners/aws.py	5.00%	152 Missing ⚠️
amlb/results.py	45.21%	63 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #656   +/-   ##
=========================================
  Coverage          ?   70.11%           
=========================================
  Files             ?       55           
  Lines             ?     6779           
  Branches          ?        0           
=========================================
  Hits              ?     4753           
  Misses            ?     2026           
  Partials          ?        0           

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