Make it possible to assign an arbitary node as the port mixer.
Also remove dynamically added ports.
Improve negotiation and allocation on the mixer ports
Add some more SSE optimisations
Move float mixer from the audio dsp to the port
Remove pw_node_get_free_port() and do things more explicitly.
Handle mixer ports in client-node
A client stream is a more specialized way to send 1 stream to pipewire.
On the client side and receiver side it can do conversion and the
buffer size of the client can be choosen arbitrarily.
Add an audio dsp module that adds an interleaver for each audio sink
and only allows 1 buffer size and format on the ports. The idea is that
dsp (pro-audio) nodes can be inserted in this part of the pipeline.
Make the protocol client connect call async with a callback when it
completes.
Move the connect methods into separate files, add an empty connect
method that will use the screencast portal to get a pipewire fd.
Use the remote intention to get the connect method.
Add some better error reporting.
Make a link factory and use create-object to make links. That way
we can have different kinds of links based on the factory and we
can also hide the factory when link creation should be blocked.
