Add option to select returned fields for GetItems action

[slyuso]

Currently, GetItems (specifically, for SharePoint) does not support selecting fields to be returned.
Moreover, many fields are being returned as expanded properties. For, example, Created By or Modified By each return 5 properties. 
As a result, for a list with many fields and many items the payload becomes huge.
The very slow action - Select - is needed to get only what you really need. 

Suggestion: Add option to select returned fields for  GetItems action.
It's a standard for all the "legacy" worflows.