Update old NWC SharePoint Onien actions to allow variables

The recently added SharePoint Online connectors were a very welcome addition and allowed specifying variables for the site url and list name.

Unfortunately the old actions such as query a list and retrieve an item stil do not allow variables, so when importing workflows (often done for dev vs. prod copies) the site url for these needs to be updated (which also frustratingly deletes the rest of the action config). It would be great if these actions would also allow variables in the site url and list name config fields.