[FEATURE] Suport s3Location as a DocumentSource

[rnapier]

Problem Statement

Bedrock supports uploads directly from S3 when using the Nova models. This should be included as a DocumentSource.

Proposed Solution

No response

Use Case

When working with S3 documents and Bedrock, this should be more efficient than downloading the document to the Strands agent and then transferring it back to the model.

Alternatives Solutions

No response

Additional Context

No response