feat: complete saleor core extensions app with React email templates

- Order confirmation, shipped, and cancelled email templates
- Uses @react-email/components for professional HTML emails
- Sends admin and customer notifications
- Integrates with Resend for email delivery
- Webhook handlers for ORDER_CREATED, ORDER_FULFILLED, ORDER_CANCELLED
- Docker image optimized for production
- Persistent auth data storage via PVC

generated/app-webhooks-types/order-filter-shipping-methods.ts

@@ -0,0 +1,18 @@
+/* eslint-disable */
+/**
+ * This file was automatically generated by json-schema-to-typescript.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source JSONSchema file,
+ * and run json-schema-to-typescript to regenerate this file.
+ */
+
+export type Id = string;
+export type Reason = string;
+export type ExcludedMethods = ExcludedShippingMethodSchema[];
+
+export interface FilterShippingMethods {
+  excluded_methods?: ExcludedMethods;
+}
+export interface ExcludedShippingMethodSchema {
+  id: Id;
+  reason?: Reason;
+}