allow to stop and start http server at will with SIGINT, stop the server on uncaught throws, display timing info for each request, use setup_call_cleanup in more places to avoid potential leaks, when handler for a path doesn't have a matching case, throw a detailed error instead of silently continuing

src/http.rs

@@ -5,6 +5,7 @@ use warp::http;
 
 pub struct HttpListener {
     pub incoming: std::sync::mpsc::Receiver<HttpRequest>,
+    pub warp_shutdown: tokio::sync::mpsc::Sender<()>,
 }
 
 pub struct HttpRequest {