Add Wizard CTA on React docs

Author: andre-statsig

docs/client/javascript-mono/react/_reactInstall.mdx

@@ -9,6 +9,17 @@ If you are starting from scratch, please refer to [New React App](https://react.
 Using Next.JS? Check out our Next guides [here](/client/javascript-sdk/next-js).
 :::
 
+## AI-powered Setup (beta)
+
+Our AI agent can setup Statsig on your codebase with this command:
+
+```shell
+npx @statsig/wizard
+```
+
+This is an experimental feature. If you have any feedback, please reach out on our [Slack community](https://statsig.com/slack).
+
+For manual setup, continue to this page's next section.
 
 ## Installation