[DX-812] Pub/Sub JavaScript SDK API references (REST interface)

[m-hulbert]

Description

This PR adds the REST interface references for the Pub/Sub JavaScript SDK, building on #3400.

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.

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 7e46c24a-4ee2-40e2-bb62-0ca893d6b82e

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
• Commit unit tests in branch dx-812-pubsub-js-rest

---

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.}

[umair-ably]

This looks great. Just 1 nit....

"Rest" is a strange one for a few reasons:

1. Menu item reads as "REST Interface" -> "Rest"
2. Other items e.g. "Auth" describe themselves as sitting within the rest client e.g. "rest.auth"... but it is obviously not "rest.rest" - again, just makes the nav a bit strange imo