feat: Add read timeout and connect timeout for bedrock provider

[Wh1isper]

Boto3 does not support configuring connect_timeout and read_timeout via environment variables

the kwargs' names are from: https://github.com/microsoft/autogen/pull/5529/files

This will simplify the user's usage and will not result in errors during long tool calls by default.

[Kludex]

Is there any other parameter that will be included? I'm not sure what's the point that we stop adding parameters, because you can also just pass the bedrock client itself... 🤔

What do you think?

[Wh1isper]

@Kludex I agree with your concern. On one hand, the current variables should be sufficient, and on the other hand, if a variable can be supported by an environment variable (e.g. AWS_PROFILE for profile file), we don't need to add it.

The most painful thing in this case is that we can only pass the bedrock client as they are not supported via environment variable, if I allow user to pass in a model name, I have to manually patch the infer_model method...

[Kludex]

Let's add those. :)