move Windows app to Windows folder, create folder for Web, create simplest web api service

Windows/Azaion.Annotator/HelpWindow.xaml.cs

@@ -0,0 +1,20 @@
+using System.Windows;
+using Azaion.Annotator.DTO;
+
+namespace Azaion.Annotator;
+
+public partial class HelpWindow : Window
+{
+    private readonly Config _config;
+
+    public HelpWindow(Config config)
+    {
+        _config = config;
+        Loaded += (_, _) => CbShowHelp.IsChecked = _config.ShowHelpOnStart;  
+        InitializeComponent();
+    }
+    private void Close(object sender, RoutedEventArgs e) => Close();
+
+    private void CbShowHelp_OnChecked(object sender, RoutedEventArgs e) => _config.ShowHelpOnStart = true;
+    private void CbShowHelp_OnUnchecked(object sender, RoutedEventArgs e) => _config.ShowHelpOnStart = false;
+}