[DevTools] Prepare react-devtools-cdt-mcp 0.1.0 for npm (#37500)

## Summary
- Bump `react-devtools-cdt-mcp` from the placeholder `0.0.0` to `0.1.0`.
- Describe the package as a browser library that registers React tools
with chrome-devtools-mcp.

Stacked on https://github.com/react/react/pull/37503

## Test plan
- [ ] Confirm `packages/react-devtools-cdt-mcp/package.json` is `0.1.0`
before publishing.
- [ ] Dry-run the publish workflow after this PR.