Switch to new FHIR ePL

[zdavatz]

1. The new ePL can be found here: https://sl.bag.admin.ch/
2. Sample download if above link is not working: https://epl.u.c.bag.admin.ch/static/fhir/foph-sl-export-20251121.ndjson
3. XML - FHIR Abgleich.xlsx
4. Data Structure: https://fhir.ch/ig/ch-epl/spezialitaetenliste.html#datastructure
5. https://fhir.ch/ig/ch-epl/1.0.0-ballot/
6. Latest ndjson: https://sl.bag.admin.ch/resources/current-and-archived-data
7. https://epl.bag.admin.ch/static/fhir/foph-sl-export-20260105.ndjson
8. If ATC-Code and Active Agent are still missing, take the ATC-Code and name from the FHIR ePL.