see https://github.com/aspnet/Mvc/issues/4785
AspNetCore.Mvc has all the basic things that are already installed for you
if you want to use AspNetCore.Mvc.Core, you have to configure them yourself
seems reasonable to use AspNetCore.Mvcif you don't know what you needAspNetCore.Mvc.Core
.AddMvc(), "" , . , , ..AddMvcCore() ( " , " ), , .