Add (unimplemented) webview server

entry.ts

@@ -1,4 +1,12 @@
-import { Server } from "./server";
+import { MainServer, WebviewServer } from "./server";
 
-const server = new Server();
-server.listen();
+const webviewServer = new WebviewServer();
+const server = new MainServer(webviewServer);
+webviewServer.listen(8444).then(async () => {
+	await server.listen(8443);
+	console.log(`Main server serving ${server.address}`);
+	console.log(`Webview server serving ${webviewServer.address}`);
+}).catch((error) =>  {
+	console.error(error);
+	process.exit(1);
+});