modules: Allow roc source/sink to be used as native modules

Move the implementation of roc source and sink so that they can be used as pipewire native modules and make the pulse module implementation use those.

For testing,

On remote machine

pactl load-module module-roc-source source_name=roc-source sess_latency_msec=5000 resampler_profile=high

Note that for smooth playback, the sess_latency_msec will have to be specified depending on network.

On local machine

pactl load-module module-roc-sink remote_ip=192.168.0.144 sink_name=roc-sink
gst-launch-1.0 -v filesrc location=jambi.mp3 ! mpegaudioparse ! mpg123audiodec ! audio/x-raw,format=S32LE,channels=2,rate=44100 ! pipewiresink

Do the necessary change in pavucontrol.

Or add the following to pipewire-pulse.conf, if not using pactl.

On sender,

    {   name = libpipewire-module-roc-sink
        args = {
            local.ip = 0.0.0.0
            remote.ip = 192.168.0.144
            remote.source.port = 10001
            remote.repair.port = 10002
            sink.props = {
               node.name = "roc-sink"
            }
        }
    }

On receiver,

{   name = libpipewire-module-roc-source
    args = {
        local.ip = 0.0.0.0
        resampler.profile = medium
        sess.latency.msec = 5000
        local.source.port = 10001
        local.repair.port = 10002
        source.props = {
           node.name = "roc-source"
        }
    }
}