Implemented layer elements

Added a brush layer element
Corsair - Added ST100 RGB layout

src/Artemis.UI/Screens/Module/ProfileEditor/ElementProperties/ElementPropertiesView.xaml

@@ -3,15 +3,23 @@
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:local="clr-namespace:Artemis.UI.Screens.Module.ProfileEditor.ElementProperties"
+             xmlns:elementProperties="clr-namespace:Artemis.UI.Screens.Module.ProfileEditor.ElementProperties"
+             xmlns:s="https://github.com/canton7/Stylet"
              mc:Ignorable="d"
-             d:DesignHeight="450" d:DesignWidth="800">
+             d:DesignHeight="450" d:DesignWidth="800"
+             d:DataContext="{d:DesignInstance {x:Type elementProperties:ElementPropertiesViewModel}}">
     <Grid>
-        <StackPanel>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+        <StackPanel Grid.Row="0">
             <TextBlock Style="{StaticResource MaterialDesignSubheadingTextBlock}" Margin="10 5 0 -4">
                 Layer element properties
             </TextBlock>
             <Separator Style="{StaticResource MaterialDesignDarkSeparator}" Margin="8 0" />
         </StackPanel>
+        <ContentControl Grid.Row="1" s:View.Model="{Binding LayerElementViewModel}" />
     </Grid>
+
 </UserControl>