ptrkvsky

Add french translation for the post [https://kentcdodds.com/blog/react-production-performance-monitoring](https://kentcdodds.com/blog/react-production-performance-monitoring) Translation is visible here https://developpeur-web.tech/posts/suivi-des-performances-d-une-application-react-en-production

Hi, Before everything, congratulations for the great work, i am very happy for the moment with this starter. But for the moment i am struggling with the fact to get...