[JS] feat: Streaming - ChefBot Sample

[lilyydu]

Linked issues

closes: #1964
pending on: #1940

Details

Modifies existing ChefBot sample to display streaming.

Requirements:

• use default augmentation
• use a model that support streaming
• in index.ts, update OpenAIModel declaration to configure stream: true
• in index.ts, set informative message in ActionPlanner declaration via startStreamingMessage

Attestation Checklist

• My code follows the style guidelines of this project

• I have checked for/fixed spelling, linting, and other errors

• I have commented my code for clarity

• I have made corresponding changes to the documentation (updating the doc strings in the code is sufficient)

• My changes generate no new warnings

• I have added tests that validates my changes, and provides sufficient test coverage. I have tested with:

  • Local testing
  • E2E testing in Teams

• New and existing unit tests pass locally with my changes