Implement simple DisplayPrompt method like in maui

[generalloki]

await DisplayAlert("Alert", "You have been alerted", "OK");

bool answer = await DisplayAlert("Question?", "Would you like to play a game", "Yes", "No");
Debug.WriteLine("Answer: " + answer);

string action = await DisplayActionSheet("ActionSheet: Send to?", "Cancel", null, "Email", "Twitter", "Facebook");
Debug.WriteLine("Action: " + action);

string result = await DisplayPromptAsync("Question 1", "What's your name?");

async void OnActionSheetCancelDeleteClicked(object sender, EventArgs e)
{
string action = await DisplayActionSheet("ActionSheet: SavePhoto?", "Cancel", "Delete", "Photo Roll", "Email");
Debug.WriteLine("Action: " + action);
}

[generalloki]

I am moving this to discussions as it is not critical