Up until now, all the 'node.features.audio.*' settings did not have any effect
if changed at runtime. This patch fixes this by reconfiguring the audio adapters
every time those settings have changed.
Copy all the node properties into the session item and customize
afterwards, instead of starting with an empty set and cherry-picking
properties... We need to cherry-pick more and more properties
overtime and it's easy to make mistakes
* prefix all settings with "node."
* move settings-stream.lua to settings-node.lua
* move the "audio-no-dsp" setting to the node settings
* add more settings related to node features
* split the default stream volume into 2 settings, one for playback
streams and one for capture streams
