feat: make Config Clone (Eugeny#544)

Author: plaflamme

russh-config/src/lib.rs

@@ -25,7 +25,7 @@ pub enum Error {
 mod proxy;
 pub use proxy::*;
 
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub struct Config {
     pub user: String,
     pub host_name: String,
@@ -297,4 +297,10 @@ Host test_host
         );
         assert!(!config.strict_host_key_checking);
     }
+
+    #[test]
+    fn is_clone() {
+        let config: Config = Config::default("some_host");
+        let _ = config.clone();
+    }
 }