feat: support xinference rerank model

[hwzhuhao]

What problem does this PR solve?

support xinference rerank model
#1455

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

[jay-jjwu]

what is the base url for rerank model of xinference?

[jay-jjwu]

what is the base url for rerank model of xinference?

There is always an error "Fail to access model(bge-reranker-v2-m3).'results'", any ideas?
The xinference API works well, because i tested with postman.
BTW, the embedding models work well too.
What's wrong with the rerank models?

[jay-jjwu]

[morler]

You need to add a rerank directory to the address, like this: http://host:port/v1/rerank.

[chinamerp]

You need to add a rerank directory to the address, like this: http://host:port/v1/rerank.

it not works at xinference:v0.15.3