Sync Tags from Firefox Bookmarks

**Is your feature request related to a problem? Please describe.**
When i upload the bookmarks to nextcloud, the folders get synced but not the tags. Using the Nextcloud Bookmarks App (via F-Droid) it shows only the tags not the folders. In Nextcloud also not tags are shown.

**Describe the solution you'd like**
It would be great if the tags get synced to.

**Describe alternatives you've considered**
Alternatively the Nextcloud Bookmark app should show the folders as well.

**Additional context**
Add any other context or screenshots about the feature request here.