Created by: endiliey
Motivation
Hello there, as discussed in #6793 (closed) we would like to dogfood docusaurus v2 for CRA. The development experience for v2 is much better because client side rendering is also enabled. The website is also seems to be very performant (its a single page app now but also staticly rendered for SEO)
It's better to test it from netlify preview https://deploy-preview-7785--create-react-app.netlify.com/
Probably what's missing is the "Edit" button on each docs page and a collapsible sidebar. That will come in .alpha.26 instead
cc @yangshun