chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/store/integration-tests/__fixtures__/index.ts

@@ -0,0 +1,11 @@
+import { StoreTypes } from "@medusajs/types"
+
+export const createStoreFixture: StoreTypes.CreateStoreDTO = {
+  name: "Test store",
+  supported_currency_codes: ["usd", "eur"],
+  default_sales_channel_id: "test-sales-channel",
+  default_region_id: "test-region",
+  metadata: {
+    test: "test",
+  },
+}