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/FSharpExample/Program.fs

@@ -0,0 +1,48 @@
+open Terminal.Gui
+
+type ExampleWindow() as this =
+    inherit Window()
+    
+    do
+        this.Title <- sprintf "Example App (%O to quit)" Application.QuitKey
+
+        // Create input components and labels
+        let usernameLabel = new Label(Text = "Username:")
+
+        let userNameText = new TextField(X = Pos.Right(usernameLabel) + Pos.op_Implicit(1), Width = Dim.Fill())
+
+        let passwordLabel = new Label(Text = "Password:", X = Pos.Left(usernameLabel), Y = Pos.Bottom(usernameLabel) +  Pos.op_Implicit(1))
+
+        let passwordText = new TextField(Secret = true, X = Pos.Left(userNameText), Y = Pos.Top(passwordLabel), Width = Dim.Fill())
+
+        // Create login button
+        let btnLogin = new Button(Text = "Login", Y = Pos.Bottom(passwordLabel) +  Pos.op_Implicit(1), X = Pos.Center(), IsDefault = true)
+
+        // When login button is clicked display a message popup
+        btnLogin.Accepting.Add(fun _ ->
+            if userNameText.Text = "admin" && passwordText.Text = "password" then
+                MessageBox.Query("Logging In", "Login Successful", "Ok") |> ignore
+                ExampleWindow.UserName <- userNameText.Text.ToString()
+                Application.RequestStop()
+            else
+                MessageBox.ErrorQuery("Logging In", "Incorrect username or password", "Ok") |> ignore
+        )
+
+        // Add the views to the Window
+        this.Add(usernameLabel, userNameText, passwordLabel, passwordText, btnLogin)
+
+    static member val UserName = "" with get, set
+
+[<EntryPoint>]
+let main argv =
+    Application.Init()
+    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.
+    printfn "Username: %s" ExampleWindow.UserName
+    
+    0 // return an integer exit code