feat: Add Rubric based tool use metric

The PR does two main things:
1) Introduces a new rubric based tool use metric
2) Given that we now have two rubric based metric, we refactor and create a new RubricBasedEvaluator interface.

PiperOrigin-RevId: 811983514
This commit is contained in:
Ankur Sharma
2025-09-26 15:47:42 -07:00
committed by Copybara-Service
parent a959653cf3
commit c984b9e552
10 changed files with 1312 additions and 681 deletions
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