public async void BuscaPokemon(object sender, EventArgs e)
        {
            var pokemon = await _pokemonService.BuscarPokemon(txtPokemon.Text);

            if (pokemon == null)
            {
                await DisplayAlert("Aviso", "O Pokemon não foi encontrado", "Ok");

                return;
            }

            imgPokemon.Source = pokemon.sprites.front_default;
        }