Feature/bedrock

[kristoftabori]

New Engine with basic unit tests added to interact with AWS Bedrock. The engine needs to be initialized with a botocore BaseClient for authentication/authorization purposes.
It closes the issue Bedrock #105.

[vinid]

Hello and thanks for this! We have an upcoming PR (#120) that introduces litellm as an engine. This should hopefully cover most models (bedrock too) with one single implementation!

Let us know if you think this makes sense or if you think we should probably keep bedrock's client separated from the rest!

[kristoftabori]

hi Federico, thank you for pointing towards the LiteLLM direction. I think this PR's implementation gives an intuitive out-of-the-box experience if the user has already a boto session running. It's a good default for people working in teams where only Bedrock-provided models are available.
I would vote for having this sperately for the time being.

[vinid]

sounds good, can you make

langchain>=0.3.0
langchain-aws>=0.2.1

optional like in grok? we can merge this after that

[kristoftabori]

sounds good, can you make

langchain>=0.3.0
langchain-aws>=0.2.1

optional like in grok? we can merge this after that

Thank you for the insight. I've just implemented it, please take a look.

[vinid]

thanks again for this!