feat: Add initial support for contacts

src/fellchensammlung/tools/admin.py

@@ -4,6 +4,7 @@ from django.utils import timezone
 from datetime import timedelta
 
 from django_super_deduper.merge import MergedModelInstance
+from django.template.loader import render_to_string
 
 from fellchensammlung.models import AdoptionNotice, Location, RescueOrganization, AdoptionNoticeStatus, Log, \
     AdoptionNoticeNotification
@@ -116,4 +117,10 @@ def dedup_locations():
 
 def export_orgs_as_vcf():
     rescue_orgs = RescueOrganization.objects.filter(phone_number__isnull=False)
+    result = render_to_string(template_name="fellchensammlung/contacts.vcf",
+                     context={"contacts": rescue_orgs, "current_time": timezone.now()})
+    filename = "contacts.vcf"
+    with open(filename, "w") as f:
+        f.write(result)
+    print(f"Wrote {len(rescue_orgs)} contacts to {filename}")