Missing dependencies

Description:

This package should be dependent on alsa-utils and playerctl packages for volume and media key control.

Additional info:

• See relevant file: https://github.com/pop-os/cosmic-settings-daemon/blob/master/data/system_actions.ron#L19-L27
• Original issue https://github.com/pop-os/cosmic-epoch/issues/895
• You might need more dependencies based on the relevant file, I only tested the highlighted section.

Steps to reproduce:

1. Don't install the packages
2. Try to use the Media or Volume keys directly on the keyboard (or add a shortcut and use that)