add Newtonsoft.Json package

Author: kajan

AspNetCoreVueMpa.Web/AspNetCoreVueMpa.Web.csproj

@@ -6,6 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="3.1.12" />
+    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>
 
 </Project>