100% CPU for webpack-dev-server running in GDK

It appears inefficient file change polling is causing issues for some people running the GDK with webpack-dev-server.

One solution that has been suggested is to install fsevents:

yarn add --dev fsevents

Can anyone who has been experiencing this issue confirm this fix works for them? If so, I'll open a MR to add this to our devDependencies.

(tagging people who reported this in slack over the last few weeks) @rspeicher @brycepj @stanhu @tiagonbotelho