[EPIC] Better and consistent naming for the audio channels

The PipeWire channels currently used for AURA Playout are named:

  • in_line_0
  • lineout_0

This can be a little bit confusing, for example when trying to find the correct channels with qpwgraph, since there is no indication what belongs to AURA:

Screenshot_from_2024-02-22_11-15-03

For consistency and that they are easier to identify, I suggest this naming scheme:

  • aura_engine_line_in_0
  • aura_engine_line_out_0

Maybe there are also other metadata settings possible, to give more details when calling the following?

docker compose run engine-core wpexec /etc/wireplumber/scripts/ls-ports.lua