Add profile support

Closes #231

src/Spectre.Console/Internal/DefaultInput.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace Spectre.Console
+{
+    internal sealed class DefaultInput : IAnsiConsoleInput
+    {
+        private readonly Profile _profile;
+
+        public DefaultInput(Profile profile)
+        {
+            _profile = profile ?? throw new ArgumentNullException(nameof(profile));
+        }
+
+        public ConsoleKeyInfo ReadKey(bool intercept)
+        {
+            if (_profile.Capabilities.Tty)
+            {
+                throw new InvalidOperationException("Cannot read input from a TTY console.");
+            }
+
+            if (!_profile.Capabilities.Interactive)
+            {
+                throw new InvalidOperationException("Failed to read input in non-interactive mode.");
+            }
+
+            return System.Console.ReadKey(intercept);
+        }
+    }
+}