chore: Move factories and helpers to a better place (#4551)

* chore: Move factories and helpers to a better place

* align factory product variant

* fix factory cart

* add simple store fac

* fix tests

* fix tests

* fix

* fix cart seeder

integration-tests/factories/index.ts

@@ -0,0 +1,26 @@
+export * from "./simple-batch-job-factory"
+export * from "./simple-cart-factory"
+export * from "./simple-custom-shipping-option-factory"
+export * from "./simple-customer-factory"
+export * from "./simple-discount-factory"
+export * from "./simple-gift-card-factory"
+export * from "./simple-line-item-factory"
+export * from "./simple-order-edit-factory"
+export * from "./simple-order-factory"
+export * from "./simple-order-item-change-factory"
+export * from "./simple-payment-collection-factory"
+export * from "./simple-payment-factory"
+export * from "./simple-price-list-factory"
+export * from "./simple-product-category-factory"
+export * from "./simple-product-factory"
+export * from "./simple-product-tax-rate-factory"
+export * from "./simple-product-type-tax-rate-factory"
+export * from "./simple-product-variant-factory"
+export * from "./simple-region-factory"
+export * from "./simple-sales-channel-factory"
+export * from "./simple-shipping-method-factory"
+export * from "./simple-shipping-option-factory"
+export * from "./simple-shipping-profile-factory"
+export * from "./simple-shipping-tax-rate-factory"
+export * from "./simple-tax-rate-factory"
+export * from "./simple-store-factory"