docs: added reference for JS Client (#1629)

* added reference for JS Client

* added reference for JS Client

* added reference for JS Client

docs/content/references/js-client/classes/internal.AdminPostDraftOrdersDraftOrderLineItemsReq.md

@@ -0,0 +1,57 @@
+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Class: AdminPostDraftOrdersDraftOrderLineItemsReq
+
+[internal](../modules/internal.md).AdminPostDraftOrdersDraftOrderLineItemsReq
+
+## Properties
+
+### metadata
+
+• `Optional` **metadata**: [`Record`](../modules/internal.md#record)<`string`, `unknown`\>
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/draft-orders/create-line-item.d.ts:48
+
+___
+
+### quantity
+
+• **quantity**: `number`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/draft-orders/create-line-item.d.ts:47
+
+___
+
+### title
+
+• `Optional` **title**: `string`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/draft-orders/create-line-item.d.ts:44
+
+___
+
+### unit\_price
+
+• `Optional` **unit\_price**: `number`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/draft-orders/create-line-item.d.ts:45
+
+___
+
+### variant\_id
+
+• `Optional` **variant\_id**: `string`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/draft-orders/create-line-item.d.ts:46