Set price correct for event registration

aleksis/apps/paweljong/migrations/0023_eventregistration_cost.py

+# Generated by Django 3.2.19 on 2023-06-04 14:54
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('paweljong', '0022_send_to_retracted_or_not_checked_in'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='eventregistration',
+            name='cost',
+            field=models.IntegerField(blank=True, null=True, verbose_name='Cost in €'),
+        ),
+    ]