feat(api): generate models for patched products, refunds, site configurations, payments, and user registration

- Added PatchedProduct, PatchedProductImage, PatchedRefund, and related models.
- Introduced Payment, PaymentBody, PaymentCreate, and PaymentRead models.
- Created enums for payment methods, reasons for refunds, roles, and shipping methods.
- Implemented models for site configurations and their opening hours.
- Added ZasilkovnaPacket and ZasilkovnaShipment models for handling shipping data.
- Generated user registration model with validation rules.
- Updated public API functions to support new models and queries.

frontend/src/api/generated/private/models/payer.ts

@@ -0,0 +1,14 @@
+/**
+ * Generated by orval v7.17.0 🍺
+ * Do not edit manually.
+ * OpenAPI spec version: 0.0.0
+ */
+import type { Contact } from "./contact";
+
+export interface Payer {
+  contact: Contact;
+  allowed_payment_instruments?: string[];
+  default_payment_instrument?: string;
+  allowed_swifts?: string[];
+  default_swift?: string;
+}