Add a new tag

Author: mattleibow

source/Directory.Build.props

@@ -21,7 +21,7 @@
     <Owners>Microsoft</Owners>
     <Copyright>© Microsoft Corporation. All rights reserved.</Copyright>
     <PackageIconUrl>https://go.microsoft.com/fwlink/?linkid=2130524</PackageIconUrl>
-    <PackageTags>xamarin graphics ios android linux windows uwp tvos watchos macos cross-platform skiasharp</PackageTags>
+    <PackageTags>xamarin graphics ios android linux windows uwp tvos watchos macos cross-platform skiasharp skiasharp.extended</PackageTags>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <PackageProjectUrl>https://go.microsoft.com/fwlink/?linkid=2071915</PackageProjectUrl>