Add Project to web app [ Not Complete, help wanted]

Created by: Kiri23

Addresses #1722. I'm trying to create a form so then people can add project to the web app. I'm stuck in this part.

context type: The context router is marked as required in Switch, but its value is undefined. in Switch (at Main.jsx:12)
in Main (at App.jsx:13) in div (at App.jsx:11) in App (at index.js:7)

I am using React-router-dom. following this example https://reacttraining.com/react-router/web/example/basic