Changes to Get Schema Overview

added the optional property description to the response with the 200 status

added the optional property mutations/items/deprecationReason to the response with the 200 status

added the optional property mutations/items/isDeprecated to the response with the 200 status

added the optional property queries/items/deprecationReason to the response with the 200 status

added the optional property queries/items/isDeprecated to the response with the 200 status