Add project files.

Examples/Nodify.Playground/PointEditorView.xaml

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+<UserControl x:Class="Nodify.Playground.PointEditorView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             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:Nodify.Playground"
+             d:DataContext="{d:DesignInstance Type={x:Type local:PointEditor}, IsDesignTimeCreatable=True}"
+             mc:Ignorable="d"
+             d:DesignHeight="450"
+             d:DesignWidth="800">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto"
+                              MinWidth="20" />
+            <ColumnDefinition MinWidth="30" />
+        </Grid.ColumnDefinitions>
+
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+
+        <TextBlock TextAlignment="Center"
+                   VerticalAlignment="Center">
+                <Run Text="{Binding XLabel}" />
+                <Run Text=":" />
+        </TextBlock>
+        <TextBox Text="{Binding X, Mode=TwoWay}"
+                 Grid.Column="1" />
+
+        <TextBlock TextAlignment="Center"
+                   VerticalAlignment="Center"
+                   Grid.Row="1"
+                   Margin="0 5 0 0">
+                <Run Text="{Binding YLabel}" />
+                <Run Text=":" />
+        </TextBlock>
+        <TextBox Text="{Binding Y, Mode=TwoWay}"
+                 Margin="0 5 0 0"
+                 Grid.Row="1"
+                 Grid.Column="1" />
+    </Grid>
+</UserControl>