Move Spectre.Console.Cli to it's own package

src/Spectre.Console.Testing/Extensions/ShouldlyExtensions.cs

@@ -0,0 +1,16 @@
+namespace Spectre.Console;
+
+internal static class ShouldlyExtensions
+{
+    [DebuggerStepThrough]
+    public static T And<T>(this T item, Action<T> action)
+    {
+        if (action == null)
+        {
+            throw new ArgumentNullException(nameof(action));
+        }
+
+        action(item);
+        return item;
+    }
+}