First pass at songs view

Using data grid for songs view. Added FileSystemUtil for async folder traversal

Aurora/Frontend/Views/Songs/SongsView.xaml.cs

@@ -10,6 +10,7 @@ namespace Aurora.Frontend.Views.Songs
         public SongsView()
         {
             InitializeComponent();
+            BindingContext = new SongsViewModel();
         }
     }
 }