As Matthias pointed out, GNOME Software especially in Ubuntu 17.04 already supports apps showing plugins. Please file a bug if you know of any plugins that are packaged in Ubuntu but are not showing up on the app description page. Please use the tag 'appstream' for these bugs.
You should be able to install drivers with Ubuntu's Software & Updates (software-properties-gtk) app.
As Matthias pointed out, GNOME Software especially in Ubuntu 17.04 already supports apps showing plugins. Please file a bug if you know of any plugins that are packaged in Ubuntu but are not showing up on the app description page. Please use the tag 'appstream' for these bugs.
You should be able to install drivers with Ubuntu's Software & Updates (software- properties- gtk) app.
Therefore, I updated this bug's title.