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/Example/Example.cs

@@ -0,0 +1,88 @@
+// This is a simple example application.  For the full range of functionality
+// see the UICatalog project
+
+// A simple Terminal.Gui example in C# - using C# 9.0 Top-level statements
+
+using System;
+using Terminal.Gui;
+
+// Override the default configuration for the application to use the Light theme
+ConfigurationManager.RuntimeConfig = """{ "Theme": "Light" }""";
+
+Application.Run<ExampleWindow> ().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);
+    }
+}

Examples/Example/Example.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <!-- Version numbers are automatically updated by gitversion when a release is released -->
+    <!-- In the source tree the version will always be 1.0 for all projects. -->
+    <!-- Do not modify these. -->
+    <AssemblyVersion>2.0</AssemblyVersion>
+    <FileVersion>2.0</FileVersion>
+    <Version>2.0</Version>
+    <InformationalVersion>2.0</InformationalVersion>
+  </PropertyGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Terminal.Gui\Terminal.Gui.csproj" />
+  </ItemGroup>
+</Project>

Examples/Example/README.md

@@ -0,0 +1,11 @@
+# Terminal.Gui C# Example
+
+This example shows how to use the Terminal.Gui library to create a simple GUI application in C#.
+
+This is the same code found in the Terminal.Gui README.md file.
+
+To explore the full range of functionality in Terminal.Gui, see the [UICatalog](../UICatalog) project
+
+See [README.md](https://github.com/gui-cs/Terminal.Gui) for a list of all Terminal.Gui samples.
+
+Note, the old `demo.cs` example has been deleted because it was not a very good example. It can still be found in the [git history](https://github.com/gui-cs/Terminal.Gui/tree/v1.8.2).