Add network audio processing support

> So coming in v1.4, you can do:
> 1. on your own pc, run:
> ```jackd -R -P 80 -d net -a 192.168.51.1 --opus -C 2 -P 2 -i 1 -o 1 -l 4 -n slave -s```
> 2. on mod, via ssh, run:
> ```
> jack_load netmanager -i "-a 192.168.51.1"
> systemctl restart mod-ui
> ```

https://forum.moddevices.com/t/netjack-pluggin/1134/9?u=srmourasilva