Adding jina as scoring model. Feature request: #974

[One16-KS]

Module added according #973 in order to minimize conflicts. Implementation in line with cohere reranking

Issue

#974

Change

• Adding Jina ai as a scoring model.
• Default model: jina-reranker-v1-base-en
• Default url: https://api.jina.ai/v1/
• Used Jackson object mapper instead of Gson, as I found it it's langchain4j intent to move away from Gson
• Tried to keep implementation in line with Cohere reranking module

General checklist

• There are no breaking changes
• I have added unit and integration tests for my change
• I have manually run all the unit and integration tests in the module I have added/changed, and they are all green
• I have manually run all the unit and integration tests in the core and main modules, and they are all green

• I have added/updated the documentation
• I have added an example in the examples repo (only for "big" features)

Checklist for adding new model integration

• I have added my new module in the BOM

[One16-KS]

There is only an example of the reranking with cohere, but no separate documentation... I'm happy to have a small section on the reranking... Let me know what to do with it,
cheers

[One16-KS]

Example not needed as there is already an advanced RAG example present with Cohere.

[langchain4j]

@One16-KS good job, thanks a lot!