A new crate: simple-server, a basic webserver

Hey all! @ag_dubs and I have been working on a project, and today is its first release! simple-server is a very standard webserver implementation. In some ways, it's a continuation of chapter 20 of the book, in some ways, it's "hey how close can we make the API to nodejs's createServer. In Node: const http = require('http') const port = 3000 const requestHandler = (request, response) => { console.