overlay edit permissions via access restrictions

src/c3nav/mapdata/migrations/0130_dataoverlay_edit_access_restriction.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.1.3 on 2024-12-26 18:56
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mapdata', '0129_dataoverlay_cluster_points'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='dataoverlay',
+            name='edit_access_restriction',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='edit_access_restrictions', to='mapdata.accessrestriction', verbose_name='Editor Access Restriction'),
+        ),
+    ]