feat: Add Mean Reciprocal Rank (MRR) metric to StatisticalEvaluator

[awinml]

Related Issues

fixes #6065

Proposed Changes:

Add support for Mean Reciprocal Rank (MRR) Metric to StatisticalEvaluator.

MRR measures the mean reciprocal rank of times a label is present in at least one or more predictions.

How did you test it?

Unit tests were added to test_statistical_evaluator.py.

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test:.
• I documented my code
• I ran pre-commit hooks and fixed any issue

[coveralls]

Pull Request Test Coverage Report for Build 7973191958

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.02%) to 89.641%

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Files with Coverage Reduction	New Missed Lines	%
components/evaluators/statistical_evaluator.py	2	96.74%

Totals
Change from base Build 7972327854:	0.02%
Covered Lines:	5114
Relevant Lines:	5705

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💛 - Coveralls

[silvanocerza]

Nice, thanks! 🙏