[DX-627] Adds an API reference for Chat in JavaScript

[m-hulbert]

Description

This PR adds an API reference for Chat in JavaScript/TypeScript using the new NestedTable and MethodSignature components. It should have parity with the TypeDoc references.

There is 1 commit per file, however I haven't yet updated the references in the conceptual content to point to these references yet to keep this PR smaller for review feedback. I will add that as a separate PR or final commit once we are happy with this content.

Checklist

• Commits have been rebased.
• Linting has been run against the changed file(s).
• The PR adheres to the writing style guide and contribution guide.

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on this repository. Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch dx-627-chat-js-api

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}