feat: add login by enter and return button

mainwindow.cpp

@@ -394,6 +394,17 @@ void MainWindow::checkUpdate()
     ui->inlineTextDebug->setText(tr("Проверка обновлений..."));
 }
 
+void MainWindow::keyPressEvent(QKeyEvent *event)
+{
+
+    if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return)
+    {
+        if (ui->loginInputField->text().length() <= 0 || ui->passwordInputField->text() <= 0) return;
+
+        on_loginButton_clicked();
+    }
+}
+
 void MainWindow::painting()
 {
 //    QPixmap background(":/resource/SSJ-100.jpg");