feat: Add boto3 instrumentation

[anticorrelator]

Resolves #33

Adds instrumentation for model calls via boto3 Bedrock client

[github-actions]

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[anticorrelator]

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[axiomofjoy]

Feels unexpected to place the implementation inside init.py. Any reason not to place it inside a client file?

[RogerHYang]

should this be called bedrock instead of boto?

Suggested change

	name = "openinference-instrumentation-boto"
	name = "openinference-instrumentation-bedrock"

[anticorrelator]

That's a good question, we are instrumenting bedrock specifically but only for calls using the boto client. I'm leaning towards thinking bedrock is better too, let me think about this a little bit

[anticorrelator]

I think let's leave the module as boto, since AWS may release more LLM functionality in the future that isn't specifically part of the Bedrock service. I think we should change the instrumentor name to BedrockInstrumentor though

[anticorrelator]

Feels unexpected to place the implementation inside init.py. Any reason not to place it inside a client file?

I think it's often seen if the implementation is small. I'll break it up as the complexity grows