feat(medusa-oas-cli,oas-github-ci): new options + added download of OAS in api reference (#5453)

www/apps/api-reference/app/_mdx/client-libraries.mdx

@@ -1,5 +1,6 @@
 import { CodeTabs } from "docs-ui"
 import Space from "@/components/Space"
+import DownloadFull from "@/components/DownloadFull"
 
 ### Just Getting Started?
 
@@ -28,4 +29,10 @@ Check out the [quickstart guide](https://docs.medusajs.com/create-medusa-app).
       }
     }
   ]}
-/>
+/>
+
+### Download Full Reference
+
+Download this reference as an OpenApi YAML file. You can import this file to tools like Postman and start sending requests directly to your Medusa backend.
+
+<DownloadFull />