feat: Add external source and object identifier

src/fellchensammlung/migrations/0033_rescueorganization_external_object_identifier_and_more.py

@@ -0,0 +1,23 @@
+# Generated by Django 5.1.4 on 2025-01-05 18:18
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fellchensammlung', '0032_searchsubscription_created_at_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='rescueorganization',
+            name='external_object_identifier',
+            field=models.CharField(blank=True, max_length=200, null=True, verbose_name='External Object Identifier'),
+        ),
+        migrations.AddField(
+            model_name='rescueorganization',
+            name='external_source_identifier',
+            field=models.CharField(blank=True, choices=[('OSM', 'Open Street Map')], max_length=200, null=True, verbose_name='External Source Identifier'),
+        ),
+    ]