add snk file

Author: jcguo

Source/SVGImage/DotNetProjects.SVGImage.csproj

@@ -58,6 +58,8 @@
 		<DefineConstants Condition="$(TargetFramework.StartsWith('net6'))">$(DefineConstants);NETCORE;NETNEXT</DefineConstants>
 		<DefineConstants Condition="$(TargetFramework.StartsWith('net7'))">$(DefineConstants);NETCORE;NETNEXT</DefineConstants>
 		<DefineConstants Condition="$(TargetFramework.StartsWith('net8'))">$(DefineConstants);NETCORE;NETNEXT</DefineConstants>
+		<SignAssembly>True</SignAssembly>
+		<AssemblyOriginatorKeyFile>SVGImage.snk</AssemblyOriginatorKeyFile>
 	</PropertyGroup>
 
 	<!-- REF: https://devblogs.microsoft.com/dotnet/producing-packages-with-source-link -->