chore: reorganize docs apps (#7228)

* reorganize docs apps

* add README

* fix directory

* add condition for old docs

www/apps/user-guide/app/tips/languages/page.mdx

@@ -0,0 +1,52 @@
+---
+sidebar_position: 2
+---
+
+export const metadata = {
+  title: `Admin Languages`,
+}
+
+# {metadata.title}
+
+{/* TODO check whether the languages here are still valid. */}
+
+Medusa Admin comes with multi-language support. This document covers the complete list of available languages, both official and by the community.
+
+<Note>
+
+Can't find your language? Learn how you can contribute by translating the admin to other languages [here](!resources!/contribution-guidelines/admin-translations).
+
+</Note>
+
+## Official Languages
+
+- English
+- French
+- Portuguese
+
+## Community Translations
+
+<Note>
+
+Languages listed in this section are contributed by the Medusa community. So, their accuracy is not guaranteed. If you find problems with the translations, please [open an issue in our GitHub repository](https://github.com/medusajs/medusa/issues).
+
+</Note>
+
+- Bosanski
+- Deutsch
+- Español
+- Hindi
+- Hrvatski
+- Italiano
+- 한국어
+- 日本語
+- Polski
+- Русский
+- Slovenščina
+- Tamil
+- Tiếng Việt
+- Українська
+- العربية
+- Čeština
+- 简体中文
+- Български