Update progress bar samples to include Maximum/Minimum examples

samples/ControlCatalog/Pages/ProgressBarPage.xaml

@@ -15,6 +15,13 @@
         <Slider Name="hprogress" Maximum="100" Value="40" />
         <Slider Name="vprogress" Maximum="100" Value="60" />
       </StackPanel>
+
+      <StackPanel Spacing="10">
+        <ProgressBar VerticalAlignment="Center" IsIndeterminate="True" />
+        <ProgressBar VerticalAlignment="Center" Value="5" Maximum="10" />
+        <ProgressBar VerticalAlignment="Center" Value="50" />
+        <ProgressBar VerticalAlignment="Center" Value="50" Minimum="25" Maximum="75" />
+      </StackPanel>
     </StackPanel>
   </StackPanel>
 </UserControl>

src/Avalonia.Themes.Default/ProgressBar.xaml

@@ -1,8 +1,11 @@
 <Styles xmlns="https://github.com/avaloniaui">
   <Design.PreviewWith>
     <Border Padding="20">
-      <StackPanel>
+      <StackPanel Spacing="10">
         <ProgressBar VerticalAlignment="Center" IsIndeterminate="True" />
+        <ProgressBar VerticalAlignment="Center" Value="5" Maximum="10" />
+        <ProgressBar VerticalAlignment="Center" Value="50" />
+        <ProgressBar VerticalAlignment="Center" Value="50" Minimum="25" Maximum="75" />
         <ProgressBar HorizontalAlignment="Left" IsIndeterminate="True" Orientation="Vertical" />
       </StackPanel>
     </Border>

src/Avalonia.Themes.Fluent/Controls/ProgressBar.xaml

@@ -1,8 +1,11 @@
 <Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
   <Design.PreviewWith>
     <Border Padding="20">
-      <StackPanel>
+      <StackPanel Spacing="10">
         <ProgressBar VerticalAlignment="Center" IsIndeterminate="True" />
+        <ProgressBar VerticalAlignment="Center" Value="5" Maximum="10" />
+        <ProgressBar VerticalAlignment="Center" Value="50" />
+        <ProgressBar VerticalAlignment="Center" Value="50" Minimum="25" Maximum="75" />
         <ProgressBar HorizontalAlignment="Left" IsIndeterminate="True" Orientation="Vertical" />
       </StackPanel>
     </Border>