Preparing MLJBase to receive logger instances

[pebeto]

This PR contains the changes related to functions that can be extended by any logger projects (in this case, mlflow). It contains:

• A log_evaluation function that receives a logger instance and a performance evaluation. It can be extended by any project that logs to a platform.
• Adapting MLJBase functions that receive logger as argument.

This changes can be seen applied in MLJFlow.jl.

Useful links:

• Proposal for mlflow integration MLJ.jl#1029
• Old PR: Implementing a logging interface for MLFlow #912

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.78%. Comparing base (f808e98) to head (8b6b047).
Report is 175 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #925      +/-   ##
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+ Coverage   87.77%   87.78%   +0.01%     
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  Files          40       40              
  Lines        3656     3659       +3     
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+ Hits         3209     3212       +3     
  Misses        447      447              

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[ablaom]

@ablaom to confirm extra testing:

• MLJTestIntegration/example/bigtest/notbook.jl

[ablaom]

Can we also:

• Add resampling to the PerformanceEvaluation objects, to make this available for reporting as a tag in an MLFlow run, ie to support Include type of resampling in the run tag MLJFlow.jl#7

[ablaom]

Good to go.