Integrate and harmonize waveform related concepts

[briangow]

In waveform-reference-mapping-3 @p-talapova has been adding waveform concepts for the MIMIC-IV data.

In many cases the new concept does not exist in the Athena or other _delta tables (e.g. WAVEFORM). This is the case for the FAP (Femoral Arterial Pressure) signal for example. For this reason, it would be great to have thewaveform-reference-mapping-3 concepts integrated into released _delta tables.

In some cases a similar concept already appears in other delta tables or even Athena. For example for aVR I see these:

source table	concept_id	concept_name	domain_id	vocabulary_id	concept_class_id	standard_concept	concept_code	valid_start_date	valid_end_date
MIMIC/Ontology/concept_delta	2061506642	aVR	Measurement	MIMIC4	mimic4wdb	S	AVR	5/7/25	12/31/99
WAVEFORM/Ontology/concept_delta	2082499989	aVR	Waveform Metadata	WAVEFORM	WFE Lead	S	WF100009	12/5/25	12/31/99
Athena	1031335	Lead AVR	Observation	LOINC	LOINC System		LP7385-0	1/1/70	12/31/99
Athena	37544008	LEAD aVR	Spec Anatomic Site	CDISC	Body Structure		C90362

Given this, we may want to perform a harmonization step across libraries prior to integration (at least across the _delta tables, if none of the Athena concepts are standard).

I would assume that if the waveform concept will generally apply across datasets, that we'd lean towards adding the concept to the WAVEFORM _delta table as opposed to the MIMIC _delta table.