chore(docs): refactor pages (#1144)

* chore(docs): refactor pages

* fix: links

* fix: broken link

* refactor: post install steps using partials

docs/docs/features/mobile-app.mdx

@@ -0,0 +1,37 @@
+---
+sidebar_position: 1
+---
+
+import MobileAppDownload from '../partials/_mobile-app-download.md';
+import MobileAppLogin from '../partials/_mobile-app-login.md';
+import MobileAppBackup from '../partials/_mobile-app-login.md';
+
+# Mobile App
+
+:::tip
+To upload from other devices, try using the [Bulk Upload CLI](/docs/features/bulk-upload.md).
+:::
+
+## Download
+
+<MobileAppDownload />
+
+:::info Beta Program
+The beta release channel allows users to test upcoming changes before they are officially released. To join the channel use the links below.
+
+- Android: Invitation link from [web](https://play.google.com/store/apps/details?id=app.alextran.immich) or from [mobile](https://play.google.com/store/apps/details?id=app.alextran.immich)
+- iOS: [TestFlight invitation link](https://testflight.apple.com/join/1vYsAa8P)
+
+:::
+
+## Login
+
+<MobileAppLogin />
+
+## Backup
+
+<MobileAppBackup />
+
+:::info
+You can enable automatic backup on supported devices. For more information see [Automatic Backup](/docs/features/automatic-backup.md).
+:::