Turn "widgets" into shortcuts

The only widget that really needs to be a widget is the music player.
all others (that leads to Flow and playlists) could be shortcuts instead.

On some phones, shortcuts and widgets appear all mixed together, but work differently.

the system shortcuts follow the same pattern of other icons. They can also be customizable on some Android launchers (to change their icon or title).
Shortcuts can also be placed in folders. For example, we could store multiple playlist shortcuts in a single folder and make the home screen cleaner.

Current widgets cannot be stored in folders and have a strange look that clashes with the rest of the system.