RTAudio ROS Package Split

[elaske]

It might be nice to make this part of the package a standalone ROS wrapper for RTAudio / ROS fork for it.

It looks like the code is just added to this repo and tracked separately. At the very least, it'd be a good idea to submodule the real code so that you don't have that tracked separately.

It will make upgrading it a lot easier in the future if either of these things are done.

[francoisferland]

Yes, that was the original plan (as it used to be part of another, much larger repository), since rt_audio_ros does not have any dependencies on manyears_* packages, and we had applications were rt_audio_ros was used without sound source localization.

They remained in the same repository for practical deployment issues at the time, but now they could obviously be in their own trees.