OPT.complete() should add the alternative DV_CODED_TEXT node for all DV_TEXT

[ppazos]

1. If a node is DV_TEXT and doesn't have an alternative DV_CODED_TEXT already in the OPT, then add a DV_CODED_TEXT alternative to the attribute.children, that will allow to execute queries over the text or coded text.
2. The new DV_CODED_TEXT node should be open (no constraints added).
3. Note this will add coded nodes for all the LOCATABLE.name attributes, that is not an issue, though we can add an option to avoid it.

[ppazos]

NOTE: it seems if I have coded text, it allows text but not viceversa

[ppazos]

NOTE: we already have this implemented in EHRServer ppazos/cabolabs-ehrserver#748 in the OperationalTemplateIndexerService, we might need to retest this with specific OPTs to see why the alternative coded is not appearing as a query path.