chore: tighten interface for alpha release

src/MainWindow.cpp

@@ -162,6 +162,7 @@ void MainWindow::setupModels()
   // Create and set tree model
   m_networkStreamModel = new NetworkStreamModel(m_data, this);
   ui->topLevelParticlesView->setModel(m_networkStreamModel);
+  ui->topLevelParticlesView->setIndentation(5);
   ui->topLevelParticlesView->setHeaderHidden(true);
   ui->topLevelParticlesView->expandAll();