feat: assignment lab 10

src/main/java/lab/gui/App.java

@@ -2,16 +2,20 @@ package lab.gui;
 
 import java.io.IOException;
 import java.net.URL;
+import java.util.Locale;
+import java.util.ResourceBundle;
 
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
+import javafx.scene.Group;
 import javafx.scene.Parent;
 import javafx.scene.Scene;
 import javafx.scene.control.Alert;
 import javafx.scene.control.Alert.AlertType;
+import javafx.scene.text.Text;
 import javafx.scene.control.ButtonType;
 import javafx.stage.Modality;
 import javafx.stage.Stage;