Add AU/NZ/UK medicine registers

Add schemes for ACVM, APMA, and VMD.

well-known/icarMedicineIdentifierType.md

@@ -1,4 +1,7 @@
 # Well-known Medicine Registration Identifier Schemes
 
 | Short URI | Resolvable URI | Description | Example | Code list or format specification |
-| --- | --- | --- | --- | --- |
+| --- | --- | --- | --- | --- |
+| nz.govt.acvm | https://eatsafe.nzfsa.govt.nz/web/public/acvm-register | New Zealand Agricultural Compounds and Veterinary Medicines Register. Use the **Registration Number** from this register. | Z123456 | Character followed by numbers |
+| au.gov.apma | https://www.apvma.gov.au/ | Australian Pesticides and Veterinary Medicines Authority. Use the PubCRIS **product number** from this register. | 99999 | Numeric |
+| uk.gov.vmd | https://www.vmd.defra.gov.uk/productinformationdatabase/ | Veterinary Medicines Directorate product information database. Use the **VM Number** from this register. | 12345/54321 | number "/" number |