Additional fields rendering done

Removed lots of unused classes

WinAppCommon/Controls/SelectableTemplateListView.cs

@@ -0,0 +1,43 @@
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+namespace ModernKeePass.Controls
+{
+    public class SelectableTemplateListView: ListView
+    {
+        public DataTemplate SelectedItemTemplate
+        {
+            get { return (DataTemplate)GetValue(SelectedItemTemplateProperty); }
+            set { SetValue(SelectedItemTemplateProperty, value); }
+        }
+        public static readonly DependencyProperty SelectedItemTemplateProperty =
+            DependencyProperty.Register(
+                nameof(SelectedItemTemplate),
+                typeof(DataTemplate),
+                typeof(PasswordBoxWithButton),
+                new PropertyMetadata(null, (o, args) => { }));
+
+        public SelectableTemplateListView()
+        {
+            SelectionChanged += SelectableTemplateListView_SelectionChanged;
+        }
+        
+        private void SelectableTemplateListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            var listView = sender as ListView;
+            if (listView == null) return;
+            
+            foreach (var item in e.AddedItems)
+            {
+                var listViewItem = listView.ContainerFromItem(item) as ListViewItem;
+                if (listViewItem != null) listViewItem.ContentTemplate = SelectedItemTemplate;
+            }
+            //Remove DataTemplate for unselected items
+            foreach (var item in e.RemovedItems)
+            {
+                var listViewItem = listView.ContainerFromItem(item) as ListViewItem;
+                if (listViewItem != null) listViewItem.ContentTemplate = ItemTemplate;
+            }
+        }
+    }
+}