Added "Create and Join Network" menu item to windows system tray UI

windows/WinUI/ToolbarItem.xaml

@@ -43,7 +43,10 @@
 							<Separator/>
 							<MenuItem Header="ZeroTier Central"
 												Click="ToolbarItem_CentralClicked"/>
-								
+							<MenuItem Header="Create and Join Network"
+												Click="ToolbarItem_NewNetwork"
+												x:Name="newNetworkItem"/>
+							<Separator/>
 							<MenuItem Header="About..."
                                       Click="ToolbarItem_AboutClicked"/>
 							<MenuItem Header="Preferences..."

windows/WinUI/ToolbarItem.xaml.cs

@@ -120,17 +120,21 @@ namespace WinUI
                 if (shouldShowOnboardProcess)
                 {
                     // TODO: Show onboarding process window (on main thread
-                    Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() =>
-                    {
-                        PageSwitcher ps = new PageSwitcher();
-                        ps.Show();
-                    }));
+                    showOnboardProcess();
 
                     shouldShowOnboardProcess = false;
                 }
             }
         }
 
+        private void showOnboardProcess()
+        {
+            Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() =>
+            {
+                PageSwitcher ps = new PageSwitcher();
+                ps.Show();
+            }));
+        }
         private void updateStatus(ZeroTierStatus status) 
         {
             if (status != null)
@@ -142,6 +146,15 @@ namespace WinUI
                     nodeId = status.Address;
                 }));
             }
+
+            if (CentralAPI.Instance.HasAccessToken())
+            {
+                newNetworkItem.IsEnabled = true;
+            }
+            else
+            {
+                newNetworkItem.IsEnabled = false;
+            }
         }
 
         private void ToolbarItem_NodeIDClicked(object sender, System.Windows.RoutedEventArgs e)
@@ -331,6 +344,25 @@ namespace WinUI
             }
         }
 
+        private async void ToolbarItem_NewNetwork(object sender, System.Windows.RoutedEventArgs e)
+        {
+            if (CentralAPI.Instance.HasAccessToken())
+            {
+                CentralAPI api = CentralAPI.Instance;
+                CentralNetwork newNetwork = await api.CreateNewNetwork();
+
+                APIHandler handler = APIHandler.Instance;
+                handler.JoinNetwork(this.Dispatcher, newNetwork.Id);
+
+                string nodeId = APIHandler.Instance.NodeAddress();
+                bool authorized = await CentralAPI.Instance.AuthorizeNode(nodeId, newNetwork.Id);
+            }   
+            else
+            {
+                showOnboardProcess();
+            }
+        }
+
         private void setWindowPosition(Window w)
         {
             double width = w.ActualWidth;