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/patchedDiscountCode.ts

@@ -0,0 +1,39 @@
+/**
+ * Generated by orval v7.17.0 🍺
+ * Do not edit manually.
+ * OpenAPI spec version: 0.0.0
+ */
+
+export interface PatchedDiscountCode {
+  readonly id?: number;
+  /** @maxLength 50 */
+  code?: string;
+  /** @maxLength 255 */
+  description?: string;
+  /**
+   * Procento sleva 0-100
+   * @minimum 0
+   * @maximum 100
+   * @nullable
+   */
+  percent?: number | null;
+  /**
+   * Fixní sleva v CZK
+   * @nullable
+   * @pattern ^-?\d{0,8}(?:\.\d{0,2})?$
+   */
+  amount?: string | null;
+  valid_from?: Date;
+  /** @nullable */
+  valid_to?: Date | null;
+  active?: boolean;
+  /**
+   * @minimum 0
+   * @maximum 9223372036854776000
+   * @nullable
+   */
+  usage_limit?: number | null;
+  readonly used_count?: number;
+  specific_products?: number[];
+  specific_categories?: number[];
+}