Add new rerank models on Voyage

[kevintsai1202]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Add new rerank models rerank-2(max 4000 tokens), rerank-2-lite(max 2000 tokens) to voyage or let users add their own models API: https://docs.voyageai.com/reference/reranker-api

2. Additional context or comments

No response

3. Can you help us with this feature?

• [ ] I am interested in contributing to this feature.