FlatLaf hinzugefuegt fuer bessere GUI auf macOS

src/main/java/ui/MainWindow.java

@@ -91,7 +91,7 @@ public class MainWindow extends JFrame {
     public static void main(String[] args) {
         SwingUtilities.invokeLater(() -> {
             try {
-                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+                com.formdev.flatlaf.FlatLightLaf.setup();
             } catch (Exception ignored) {}
             new MainWindow().setVisible(true);
         });