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.AdminPostCollectionsReq.md

@@ -0,0 +1,37 @@
+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Class: AdminPostCollectionsReq
+
+[internal](../modules/internal.md).AdminPostCollectionsReq
+
+## Properties
+
+### handle
+
+• `Optional` **handle**: `string`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/collections/create-collection.d.ts:39
+
+___
+
+### metadata
+
+• `Optional` **metadata**: `object`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/collections/create-collection.d.ts:40
+
+___
+
+### title
+
+• **title**: `string`
+
+#### Defined in
+
+packages/medusa/dist/api/routes/admin/collections/create-collection.d.ts:38