[Done] Add option to show/hide library items per device

Feature Suggestions
1

I would like to hide library items I don’t use often depending on the device, for example:

  • I have an Android TV device I use mainly for video so I would like to hide the music library

  • I have an Android phone I use mainly for listening to music so I would like to hide all the items except the music library.

  • On my Windows 10 computer I would like to show all the library items.

3

Early 2021 clean-up: implemented (pin/unpin/order libraries to main navigation per device)