Add ability to restore Cinny's window size and position (#327)

src-tauri/src/main.rs

@@ -24,6 +24,7 @@ fn main() {
 
     builder
         .plugin(tauri_plugin_localhost::Builder::new(port).build())
+        .plugin(tauri_plugin_window_state::Builder::default().build())
         .run(context)
         .expect("error while building tauri application")
 }