chore: reorganize docs apps (#7228)

* reorganize docs apps

* add README

* fix directory

* add condition for old docs

www/apps/api-reference/specs-v2/admin/components/schemas/UpdateRegion.yaml

@@ -0,0 +1,23 @@
+type: object
+description: SUMMARY
+x-schemaName: UpdateRegion
+properties:
+  name:
+    type: string
+    title: name
+    description: The region's name.
+  currency_code:
+    type: string
+    title: currency_code
+    description: The region's currency code.
+  countries:
+    type: array
+    description: The region's countries.
+    items:
+      type: string
+      title: countries
+      description: The country's countries.
+  metadata:
+    type: object
+    description: The region's metadata.
+    properties: {}