Add non-generic interfaces IDataPortal and IChildDataPortal

[hoangcuongvn]

@rockfordlhotka Can you add non-generic interfaces IDataPortal and IChildDataPortal? They would look something like the code underneath. Because sometimes we have to deal with reflection, those non-generic interfaces would help us much. In other hand, they are similar to the former static class DataPortal in Csla 5. That would help migrating code from Csla 5 to Csla 6 much easier.

public interface IDataPortal
{
  Task<object> CreateAsync(Type type, params object[] criteria);
  Task<object> FetchAsync(Type type, params object[] criteria);
  Task<object> UpdateAsync(object obj);
  ...
}

[rockfordlhotka]

It seems like this would be in place of the change suggested in #2915?

[hoangcuongvn]

Yes, the non-generic interfaces would resolve the problem in #2915 👍

[rockfordlhotka]

Done in #2918