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/interfaces/internal.AxiosBasicCredentials.md

@@ -0,0 +1,27 @@
+---
+displayed_sidebar: jsClientSidebar
+---
+
+# Interface: AxiosBasicCredentials
+
+[internal](../modules/internal.md).AxiosBasicCredentials
+
+## Properties
+
+### password
+
+• **password**: `string`
+
+#### Defined in
+
+packages/medusa-js/node_modules/axios/index.d.ts:23
+
+___
+
+### username
+
+• **username**: `string`
+
+#### Defined in
+
+packages/medusa-js/node_modules/axios/index.d.ts:22