You've created a KeystoneJS project! This project contains an example of a basic Todo list. Look at the index.js file to see how the list is configured. It also contains a StaticApp that provides an example of simple front-end application that makes use of the graphQL API. Take a look at the public folder to see how this application is built.
To run this project first run npm install. Note: If you generated this project via the Keystone cli step this has been done for you \o/.
Once running, the Keystone Admin UI is reachable via localhost:3000/admin.
This example has no authentication, meaning anyone can add or remove todo items. You can lean more about access control and authentication at: https://keystonejs.com/api/access-control.