Invoice issuer address: Add state field (#5603)

* Invoice issuer address: Add state field

* Update src/pretix/base/settings.py

Co-authored-by: Richard Schreiber <schreiber@rami.io>

* Update src/pretix/base/models/invoices.py

Co-authored-by: Richard Schreiber <schreiber@rami.io>

---------

Co-authored-by: Richard Schreiber <schreiber@rami.io>

src/pretix/base/migrations/0296_invoice_invoice_from_state.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.24 on 2025-11-10 16:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixbase", "0295_user_is_verified"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="invoice",
+            name="invoice_from_state",
+            field=models.CharField(max_length=190, null=True),
+        ),
+    ]