chore: reorganize docs apps (#7228)

* reorganize docs apps

* add README

* fix directory

* add condition for old docs

www/apps/resources/references/modules/cart_models/page.mdx

@@ -0,0 +1,35 @@
+---
+displayed_sidebar: cartModelReference
+slug: /references/cart/models
+---
+
+import { TypeList } from "docs-ui"
+
+# Cart Module Data Models Reference
+
+This documentation provides a reference to the data models in the Cart Module
+
+## Relations Overview
+
+```mermaid
+erDiagram
+	Cart }|--|{ Address : shipping_address
+	Cart ||--|| LineItem : items
+	Cart ||--|| ShippingMethod : shipping_methods
+	LineItem ||--|| LineItemTaxLine : tax_lines
+	LineItem ||--|| LineItemAdjustment : adjustments
+	ShippingMethod ||--|| ShippingMethodTaxLine : tax_lines
+	ShippingMethod ||--|| ShippingMethodAdjustment : adjustments
+
+```
+
+## Classes
+
+- [Address](../../cart_models/classes/cart_models.Address/page.mdx)
+- [Cart](../../cart_models/classes/cart_models.Cart/page.mdx)
+- [LineItemAdjustment](../../cart_models/classes/cart_models.LineItemAdjustment/page.mdx)
+- [LineItemTaxLine](../../cart_models/classes/cart_models.LineItemTaxLine/page.mdx)
+- [LineItem](../../cart_models/classes/cart_models.LineItem/page.mdx)
+- [ShippingMethodAdjustment](../../cart_models/classes/cart_models.ShippingMethodAdjustment/page.mdx)
+- [ShippingMethodTaxLine](../../cart_models/classes/cart_models.ShippingMethodTaxLine/page.mdx)
+- [ShippingMethod](../../cart_models/classes/cart_models.ShippingMethod/page.mdx)