Added GUI backbone (login and redirect to main stage)

src/GUI/GUIMain.java

@@ -0,0 +1,29 @@
+package GUI;
+
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+public class GUIMain extends Application {
+
+    public static void main(String[] args) {
+        launch(args);
+    }
+
+    @Override
+    public void start(Stage primaryStage) throws Exception {
+        //link fxml file
+        Parent root = FXMLLoader.load(getClass().getResource("Login.fxml"));
+        //set the scene
+        Scene scene = new Scene(root, 400, 400);
+        //link the stylesheet with the scene
+        scene.getStylesheets().add(getClass().getResource("LoginStyle.css").toExternalForm());
+
+        //show the stagw
+        primaryStage.setScene(scene);
+        primaryStage.setTitle("login");
+        primaryStage.show();
+    }
+}