Android app: when adding a bookmark, allow folder search

### Describe the feature you'd like to request

When adding a bookmark on android app, instead of just showing the folder tree voew and manually look for the desired folder, add a search bar filtering the folder name.
This would allow make bookmark addition much quicker.

### Describe the solution you'd like

Desired behaviour is similar to "bookmark pro" extensione for chrome, if you ever used it:
https://chromewebstore.google.com/detail/bookmark-pro/mnflenlaoedijiilhimgcgndofcaofkh?hl=it

### Describe alternatives you've considered

Bookmark pro extensione on chrome browser on desktop.
Bookmark pro extension on yandex browser on mobile.