Implement the Fetch API #1724
Description
https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API
https://developer.mozilla.org/en-US/docs/Web/API/Headers
https://developer.mozilla.org/en-US/docs/Web/API/Request
https://developer.mozilla.org/en-US/docs/Web/API/Response