void btnAdd_Click(object sender, RoutedEventArgs e)
{
var dlg = new WordsLangDetailDlg(Window.GetWindow(this), vm, vm.NewLangWord());
dlg.ShowDialog();
}
async void ToolbarItemAdd_Clicked(object sender, EventArgs e)
{
await Shell.Current.GoToModalAsync(nameof(WordsLangDetailPage), new WordsLangDetailViewModel(vm, vm.NewLangWord()));
}