(feat): rename example-usage to just example

(feat): add the example's web-client dist folder to a gitignore
(fix): format issues
(fix): a lot of duplicate code

host/src/lib.rs

@@ -124,7 +124,10 @@ impl MTPHost {
             }
         };
 
-        let negotiated = match self.registry.negotiate(std::slice::from_ref(&client_version)) {
+        let negotiated = match self
+            .registry
+            .negotiate(std::slice::from_ref(&client_version))
+        {
             Some(v) => v,
             None => {
                 log::warn!("accept: negotiate failed for client version {client_version:?}");