private void AddFavorite_Clicked(object sender, EventArgs e)
{
_addFavorite = new AddFavorite(null);
Navigation.PushModalAsync(_addFavorite);
}
private async void ShowEditModalPage(FavoriteReadModel Favorite)
{
_addFavorite = new AddFavorite(Favorite);
await Navigation.PushModalAsync(_addFavorite);
}