feat(vaccinations): add the immunization record and its document link

- VaccinationRecord holds one administered dose: date, catalogue slug or
  the Pass's own wording, dose and series numbers, batch code, site, and
  optional links to a practitioner, a visit and a booster reminder
- VaccinationDocumentLink keeps the scanned Impfpass page beside the dose
- MeasurementReminder gains a nullable vaccination_antigen match key so a
  logged dose can clear a booster without a second reminder engine
- migration 0330, additive apart from that one nullable column

src/__tests__/encounter-reminder-exclusion.test.ts

@@ -95,6 +95,7 @@ function reminderRow(
     nextDueAt: at,
     lastSatisfiedAt: null,
     enabled: true,
+    vaccinationAntigen: null,
     createdAt: at,
     updatedAt: at,
     deletedAt: null,