[WIP] Metrics framework integration with ml-commons#3661

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pyek-bot wants to merge 8 commits intoopensearch-project:mainfrom

pyek-bot:otel_metrics_integration

Commits on May 16, 2025

feat: add static metric collection of model types
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committed

Commits on May 19, 2025

fix: fetch connector from connector_id
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committed

Commits on May 20, 2025

refactor: move ragpipeline feature flag out of supplier and use mlfeatureenabledsetting
pyek-bot
committed

Commits on May 21, 2025

feat: add settings to control metric collection
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committed