Fixes #4046 - Moves examples into ./Examples and fixes ./Tests (#4047)

* touching publish.yml

* Moved Examples into ./Examples

* Moved Benchmarks into ./Tests

* Moved Benchmarks into ./Tests

* Moved UICatalog into ./Examples

* Moved UICatalog into ./Examples 2

* Moved tests into ./Tests

* Updated nuget

Examples/NativeAot/Program.cs

@@ -0,0 +1,115 @@
+// This is a test application for a native Aot file.
+
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
+using Terminal.Gui;
+
+namespace NativeAot;
+
+public static class Program
+{
+    [RequiresUnreferencedCode ("Calls Terminal.Gui.Application.Init(IConsoleDriver, String)")]
+    [RequiresDynamicCode ("Calls Terminal.Gui.Application.Init(IConsoleDriver, String)")]
+    private static void Main (string [] args)
+    {
+        Application.Init ();
+
+        #region The code in this region is not intended for use in a native Aot self-contained. It's just here to make sure there is no functionality break with localization in Terminal.Gui using self-contained
+
+        if (Equals(Thread.CurrentThread.CurrentUICulture, CultureInfo.InvariantCulture) && Application.SupportedCultures!.Count == 0)
+        {
+            // Only happens if the project has <InvariantGlobalization>true</InvariantGlobalization>
+            Debug.Assert (Application.SupportedCultures.Count == 0);
+        }
+        else
+        {
+            Debug.Assert (Application.SupportedCultures!.Count > 0);
+            Debug.Assert (Equals (CultureInfo.CurrentCulture, Thread.CurrentThread.CurrentUICulture));
+        }
+
+        #endregion
+
+        ExampleWindow app = new ();
+        Application.Run (app);
+
+        // Dispose the app object before shutdown
+        app.Dispose ();
+
+        // Before the application exits, reset Terminal.Gui for clean shutdown
+        Application.Shutdown ();
+
+        // To see this output on the screen it must be done after shutdown,
+        // which restores the previous screen.
+        Console.WriteLine ($@"Username: {ExampleWindow.UserName}");
+    }
+}
+
+// Defines a top-level window with border and title
+public class ExampleWindow : Window
+{
+    public static string? UserName;
+
+    public ExampleWindow ()
+    {
+        Title = $"Example App ({Application.QuitKey} to quit)";
+
+        // Create input components and labels
+        var usernameLabel = new Label { Text = "Username:" };
+
+        var userNameText = new TextField
+        {
+            // Position text field adjacent to the label
+            X = Pos.Right (usernameLabel) + 1,
+
+            // Fill remaining horizontal space
+            Width = Dim.Fill ()
+        };
+
+        var passwordLabel = new Label
+        {
+            Text = "Password:", X = Pos.Left (usernameLabel), Y = Pos.Bottom (usernameLabel) + 1
+        };
+
+        var passwordText = new TextField
+        {
+            Secret = true,
+
+            // align with the text box above
+            X = Pos.Left (userNameText),
+            Y = Pos.Top (passwordLabel),
+            Width = Dim.Fill ()
+        };
+
+        // Create login button
+        var btnLogin = new Button
+        {
+            Text = "Login",
+            Y = Pos.Bottom (passwordLabel) + 1,
+
+            // center the login button horizontally
+            X = Pos.Center (),
+            IsDefault = true
+        };
+
+        // When login button is clicked display a message popup
+        btnLogin.Accepting += (s, e) =>
+        {
+            if (userNameText.Text == "admin" && passwordText.Text == "password")
+            {
+                MessageBox.Query ("Logging In", "Login Successful", "Ok");
+                UserName = userNameText.Text;
+                Application.RequestStop ();
+            }
+            else
+            {
+                MessageBox.ErrorQuery ("Logging In", "Incorrect username or password", "Ok");
+            }
+            // Anytime Accepting is handled, make sure to set e.Cancel to false.
+            e.Cancel = false;
+        };
+
+        // Add the views to the Window
+        Add (usernameLabel, userNameText, passwordLabel, passwordText, btnLogin);
+    }
+}