moved renderer to separate thread, add evenio and start structure, make it so you can add stuff

src/main.rs

@@ -1,12 +1,13 @@
-use client::Client;
+use client::ClientApp;
 use winit::event_loop::EventLoop;
 
 mod client;
 mod util;
+mod world;
 
 fn main() {
     let event_loop = EventLoop::new().expect("Failed to create event loop");
     event_loop
-        .run_app(&mut Client::new())
+        .run_app(&mut ClientApp::new())
         .expect("Failed to run event loop");
 }