[Localization] Add generator error messages (#7531)

Author: Waleed Chaudhry

NuGet.config

@@ -5,6 +5,7 @@
 	</config>
 	<packageSources>
 		<add key="Nuget Official" value ="https://www.nuget.org/api/v2/" />
+		<add key="Dotnet arcade" value ="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
 	</packageSources>
 </configuration>