feat(traces): add reranking span kind for document reranking in llama index (#1588)

* add reranking span

* add icon and color

* remove console.log

* add titleExtra

* rename reranking to reranker

* clean up

* revert demo notebook

* Revert "revert demo notebook"

This reverts commit 58cf84c872b957513624ba617b374e073ba56256.

* bump deps

* add rerank fixture, color reranked documents differently

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Co-authored-by: Mikyo King <mikyo@arize.com>