Bedrock Lambda API Gateway Streamer (Rust)

[philcallister]

Issue #, if available:

Description of changes:
Bedrock Lambda API Gateway Streamer demonstrates a simple, serverless approach to integrating Amazon Bedrock with AWS Lambda and Amazon API Gateway. Written in Rust, it showcases how to efficiently stream responses from Amazon Bedrock to a client via WebSocket connections. The example serves as a practical illustration of implementing real-time, serverless communication between Bedrock's GenAI capabilities and end-users through AWS infrastructure.

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[philcallister]

@rppth could I get a review on this PR? It's a standalone addition.

[rsgrewal-aws]

Please re do this PR following the new layout and the process for creating the required file . We request all files to have a presence on the Cookbook / Recipes Website which is fronting this github repo now. Some of the mandatory sections of the notebook need to include

• Overview.
• What are we demonstrating .
• What use case .
• What will you learn.
• What is the architectural pattern and why we select this. With a diagram
• What are the libraries to install
• What model did we choose and why this model
• Every cell needs to have a markup