mixer: Add cards settings into pulseaudio backend
Summary:
This commit bring the support to set a profile on audio hardware via
pulseaudio. You are now able to configure the output of your audio
hardware via emixer without the help of pavucontrol.
@fix T3127
Reviewers: zmike!, devilhorns
Subscribers: cedric
Tags: enlightenment-git
Maniphest Tasks: T3127
Differential Revision: https://phab.enlightenment.org/D7569