LOINC answerlists are not loaded

[sirkyp]

We found that none of the LOINC AnswerLists are not available via tx.fhir.org, but it seems like they should be.

Zulip thread (discussing the issue and the import code referenced by @grahamegrieve :
https://chat.fhir.org/#narrow/stream/179252-IG-creation/topic/Found.20multiple.20matching.20profiles.2E.2E.2E/near/271010376

[patrick-werner]

Also some LP codes seem to be missing:
Error @ Observation.component[0].code (line 40, col20): The code "LP7386-8" is not valid in the system http://loinc.org/; The code provided (http://loinc.org#LP7386-8) is not valid in the value set 'EkgLeads' (from http://tx.fhir.org/r4)