Add text prompt support

src/Spectre.Console/AnsiConsole.Prompt.cs

@@ -0,0 +1,47 @@
+using System;
+
+namespace Spectre.Console
+{
+    /// <summary>
+    /// A console capable of writing ANSI escape sequences.
+    /// </summary>
+    public static partial class AnsiConsole
+    {
+        /// <summary>
+        /// Displays a prompt to the user.
+        /// </summary>
+        /// <typeparam name="T">The prompt result type.</typeparam>
+        /// <param name="prompt">The prompt to display.</param>
+        /// <returns>The prompt input result.</returns>
+        public static T Prompt<T>(IPrompt<T> prompt)
+        {
+            if (prompt is null)
+            {
+                throw new ArgumentNullException(nameof(prompt));
+            }
+
+            return prompt.Show(Console);
+        }
+
+        /// <summary>
+        /// Displays a prompt to the user.
+        /// </summary>
+        /// <typeparam name="T">The prompt result type.</typeparam>
+        /// <param name="prompt">The prompt markup text.</param>
+        /// <returns>The prompt input result.</returns>
+        public static T Ask<T>(string prompt)
+        {
+            return new TextPrompt<T>(prompt).Show(Console);
+        }
+
+        /// <summary>
+        /// Displays a prompt with two choices, yes or no.
+        /// </summary>
+        /// <param name="prompt">The prompt markup text.</param>
+        /// <returns><c>true</c> if the user selected "yes", otherwise <c>false</c>.</returns>
+        public static bool Confirm(string prompt)
+        {
+            return new ConfirmationPrompt(prompt).Show(Console);
+        }
+    }
+}