Implement CharacterSpacing property in WinUI LabelHandler

src/Compatibility/Core/src/Windows/Extensions.cs

@@ -94,7 +94,7 @@ namespace Microsoft.Maui.Controls.Compatibility.Platform.UWP
 			return value;
 		}
 
-
+		[PortHandler]
 		internal static int ToEm(this double pt)
 		{
 			return Convert.ToInt32( pt * 0.0624f * 1000); //Coefficient for converting Pt to Em. The value is uniform spacing between characters, in units of 1/1000 of an em.

src/Compatibility/Core/src/Windows/LabelRenderer.cs

@@ -282,6 +282,7 @@ namespace Microsoft.Maui.Controls.Compatibility.Platform.UWP
 			textBlock.UpdateLineBreakMode(Element.LineBreakMode);
 		}
 
+		[PortHandler]
 		void UpdateCharacterSpacing(TextBlock textBlock)
 		{
 			textBlock.CharacterSpacing = Element.CharacterSpacing.ToEm();

src/Core/src/Handlers/Label/LabelHandler.Windows.cs

@@ -1,5 +1,3 @@
-using System;
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 
@@ -21,8 +19,8 @@ namespace Microsoft.Maui.Handlers
 		public static void MapTextColor(LabelHandler handler, ILabel label) =>
 			handler.TextBlock?.UpdateTextColor(label);
 
-		[MissingMapper]
-		public static void MapCharacterSpacing(LabelHandler handler, ILabel label) { }
+		public static void MapCharacterSpacing(LabelHandler handler, ILabel label) =>	
+			handler.TextBlock?.UpdateCharacterSpacing(label);
 
 		public static void MapFont(LabelHandler handler, ILabel label)
 		{

src/Core/src/Platform/Windows/CharacterSpacingExtensions.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace Microsoft.Maui
+{
+	public static class CharacterSpacingExtensions
+	{
+		public static int ToEm(this double pt)
+		{
+			return Convert.ToInt32(pt * 0.0624f * 1000); //Coefficient for converting Pt to Em. The value is uniform spacing between characters, in units of 1/1000 of an em.
+		}
+	}
+}

src/Core/src/Platform/Windows/TextBlockExtensions.cs

@@ -23,5 +23,10 @@ namespace Microsoft.Maui
 
 		public static void UpdatePadding(this TextBlock nativeControl, ILabel label) =>
 			nativeControl.UpdateProperty(TextBlock.PaddingProperty, label.Padding.ToNative());
+
+		public static void UpdateCharacterSpacing(this TextBlock nativeControl, ILabel label)
+		{
+			nativeControl.CharacterSpacing = label.CharacterSpacing.ToEm();
+		}
 	}
 }