docs: generate OAS manually for 2.7.0 (#12158)

* original changes

* changes

* fixes for delete operations

* generate oas

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

@@ -0,0 +1,13 @@
+type: object
+description: The details of the promotions to add to a draft order.
+x-schemaName: AdminAddDraftOrderPromotions
+required:
+  - promo_codes
+properties:
+  promo_codes:
+    type: array
+    description: The list promotion codes to add to the draft order.
+    items:
+      type: string
+      title: promo_codes
+      description: A promotion's code.