client/common: support new login screen

client/src/app.rs

@@ -21,10 +21,16 @@ pub struct AudioSettings {
     pub denoise: bool,
 }
 
+#[derive(Debug, Clone)]
+pub enum ConnectTarget {
+    Direct { host: String, port: u16 },
+    Proxy(String),
+}
+
 #[derive(Debug)]
 pub enum Command {
     Connect {
-        address: String,
+        target: ConnectTarget,
         username: String,
         config: ProxyOverrides,
     },