ClickStack: add redoc for HyperDX API

[Blargian]

Summary

HyperDX API docs available at /docs/clickstack-api

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

[vercel]

@Blargian is attempting to deploy a commit to the ClickHouse Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs	Error			Nov 21, 2025 4:21pm

2 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs-ru	Ignored	Preview		Nov 21, 2025 4:21pm
clickhouse-docs-zh	Ignored	Preview		Nov 21, 2025 4:21pm

[Blargian]

This breaks the build sadly. I think there is some kind of clash between using redoc like this and redocli that we use to build the Cloud API swagger docs at the moment:

Found undefined and using theme.openapi options
Prerendering docs
Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
1. You might have mismatching versions of React and the renderer (such as React DOM)
2. You might be breaking the Rules of Hooks
3. You might have more than one copy of React in the same app
See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem.
TypeError: Cannot read properties of null (reading 'useState')

[Blargian]

Closing in favour of #4786, which produces a cleaner experience (and works)