Profile editor - Redesigned adding/removing timeline segments

General module - Added some basic window information to the data model
Profiles - Don't render when opacity is 0
Profile editor - Render non-selected layers in their main segment
Profile editor - Condition editor fixes

src/Artemis.UI/Screens/Settings/Debug/Tabs/DataModelDebugView.xaml

@@ -54,8 +54,15 @@
                 </ComboBox.ItemTemplate>
             </ComboBox>
         </Grid>
-        <TreeView Grid.Row="1" ItemsSource="{Binding MainDataModel.Children}" HorizontalContentAlignment="Stretch">
+        <TreeView Grid.Row="1" 
+                  ItemsSource="{Binding MainDataModel.Children}" HorizontalContentAlignment="Stretch" 
+                  VirtualizingStackPanel.IsVirtualizing="True"
+                  VirtualizingStackPanel.VirtualizationMode="Recycling">
             <TreeView.Resources>
+                <Style TargetType="{x:Type TreeViewItem}" BasedOn="{StaticResource MaterialDesignTreeViewItem}">
+                    <Setter Property="IsExpanded" Value="{Binding IsVisualizationExpanded, Mode=TwoWay}">
+                    </Setter>
+                </Style>
                 <HierarchicalDataTemplate DataType="{x:Type dataModel:DataModelPropertiesViewModel}" ItemsSource="{Binding Children}">
                     <TextBlock Text="{Binding PropertyDescription.Name}" ToolTip="{Binding PropertyDescription.Description}" />
                 </HierarchicalDataTemplate>