chore: reorganize docs apps (#7228)

* reorganize docs apps

* add README

* fix directory

* add condition for old docs

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

@@ -0,0 +1,46 @@
+---
+displayed_sidebar: orderModelReference
+slug: /references/order/models
+---
+
+import { TypeList } from "docs-ui"
+
+# Order Module Data Models Reference
+
+This documentation provides a reference to the data models in the Order Module
+
+## Relations Overview
+
+```mermaid
+erDiagram
+	LineItem ||--|| LineItemTaxLine : tax_lines
+	LineItem ||--|| LineItemAdjustment : adjustments
+	Order }|--|{ Address : shipping_address
+	Order ||--|| OrderSummary : summary
+	Order ||--|| OrderItem : items
+	Order ||--|| ShippingMethod : shipping_methods
+	Order ||--|| Transaction : transactions
+	OrderChange }|--|{ Order : order
+	OrderChange ||--|| OrderChangeAction : actions
+	OrderChangeAction }|--|{ Order : order
+	OrderItem }|--|{ LineItem : item
+	ShippingMethod ||--|| ShippingMethodTaxLine : tax_lines
+	ShippingMethod ||--|| ShippingMethodAdjustment : adjustments
+
+```
+
+## Classes
+
+- [Address](../../order_models/classes/order_models.Address/page.mdx)
+- [LineItemAdjustment](../../order_models/classes/order_models.LineItemAdjustment/page.mdx)
+- [LineItemTaxLine](../../order_models/classes/order_models.LineItemTaxLine/page.mdx)
+- [LineItem](../../order_models/classes/order_models.LineItem/page.mdx)
+- [OrderChangeAction](../../order_models/classes/order_models.OrderChangeAction/page.mdx)
+- [OrderChange](../../order_models/classes/order_models.OrderChange/page.mdx)
+- [OrderItem](../../order_models/classes/order_models.OrderItem/page.mdx)
+- [OrderSummary](../../order_models/classes/order_models.OrderSummary/page.mdx)
+- [Order](../../order_models/classes/order_models.Order/page.mdx)
+- [ShippingMethodAdjustment](../../order_models/classes/order_models.ShippingMethodAdjustment/page.mdx)
+- [ShippingMethodTaxLine](../../order_models/classes/order_models.ShippingMethodTaxLine/page.mdx)
+- [ShippingMethod](../../order_models/classes/order_models.ShippingMethod/page.mdx)
+- [Transaction](../../order_models/classes/order_models.Transaction/page.mdx)