Introduce base style for Hyperlink (MaterialDesignInXAML#4000)

Users can select this style when they want font size and font weight to align with parent elements in the visual tree.

Author: jbooth88

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.Hyperlink.xaml

@@ -2,9 +2,7 @@
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
   <!-- updated specification 2018 -->
-  <Style x:Key="MaterialDesignBody1Hyperlink" TargetType="{x:Type Hyperlink}">
-    <Setter Property="FontSize" Value="16" />
-    <Setter Property="FontWeight" Value="Regular" />
+  <Style x:Key="MaterialDesignHyperlink" TargetType="{x:Type Hyperlink}">
     <Setter Property="Foreground" Value="{DynamicResource MaterialDesign.Brush.Foreground}" />
     <Setter Property="TextDecorations" Value="None" />
     <Style.Triggers>
@@ -24,6 +22,13 @@
     </Style.Triggers>
   </Style>
 
+  <Style x:Key="MaterialDesignBody1Hyperlink"
+         TargetType="{x:Type Hyperlink}"
+         BasedOn="{StaticResource MaterialDesignHyperlink}">
+    <Setter Property="FontSize" Value="16" />
+    <Setter Property="FontWeight" Value="Regular" />
+  </Style>
+
   <Style x:Key="MaterialDesignBody2Hyperlink"
          TargetType="{x:Type Hyperlink}"
          BasedOn="{StaticResource MaterialDesignBody1Hyperlink}">

src/MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.TextBlock.xaml

@@ -5,6 +5,9 @@
   </ResourceDictionary.MergedDictionaries>
 
   <Style x:Key="MaterialDesignTextBlock" TargetType="{x:Type TextBlock}">
+    <Style.Resources>
+      <Style TargetType="Hyperlink" BasedOn="{StaticResource MaterialDesignHyperlink}" />
+    </Style.Resources>
     <Setter Property="FontSize" Value="13" />
     <Setter Property="FontWeight" Value="Regular" />
     <Setter Property="Padding" Value="0,4" />