Improve network stack

[jcelerier]

• oscquery: port to boost.beast
• protocols: work on ipv6 support
• protocols: add an initial socket.io implementation

TODO: make sure all tests pass.
OSCQuery publication / exploration examples seem to work fine and are compatible with the previous version.

[jcelerier]

@x37v if you want to review / test this version with your stack. I need to do a bit more testing but we now have:

• a much more modern (and consistently maintained) websocket backend, unlike websocketpp which has been abandoned for years: one commit in the last five years.
• I tried adding ipv6 support wherever it was relevant - things work locally but so far I only tested this part under linux, need to test on windows and mac, also with various clients such as ESP32
• the websocket implementation for oscquery is more flexible and also now supports using [socket.io](https://socket.io/ as backend) (@ogauthiersat @blueyeti) ; this opens interesting use cases with the "rooms" concept of socket.io.

[ogauthiersat]

@jcelerier I managed to build this branch into my score dev environment. However, I had to comment out all calls to boost::asio::ip::v6_only and disable vst/vst3/clap plugins that were not finding websocket_simple_client.

/home/ogauthier/git/github.com/ossia/score/3rdparty/libossia/src/ossia/protocols/socketio/socketio_server.cpp:472:42: error: no member named 'v6_only' in namespace 'boost::asio::ip'
  472 |   m_acceptor.set_option(boost::asio::ip::v6_only(false), ec);

/home/ogauthier/git/github.com/ossia/score/src/clappuppet/clappuppet.cpp:190:15: error: no type named 'websocket_simple_client' in namespace 'ossia::net'; did you mean 'websocket_simple_client_beast'?
  190 |   ossia::net::websocket_simple_client socket{{.url = "ws://127.0.0.1:37589"}, ctx};

I tested OSCQuery device, gives the same results under this branch or with release 3.8.1 :

• Add OSCQuery device pointing at host ws://127.0.0.1:9999
• OSCQuery device appears empty
• Right-click QSCQuery device, Refresh namespace
• OSCQuery device is populated normally
• Add String process
• String process does not appear in QSCQuery device tree
• Right-click QSCQuery device, Refresh namespace
• String process is available in OSCQuery tree, and modify value works

I confirm that user agent is different in the websocket setup header :

HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Accept: WHdzoMgsjebbUf6MTfY4iCsB6aQ=
Server: Boost.Beast/359

3.8.1 :

HTTP/1.1 101 Switching Protocols
Connection: Upgrade
Sec-WebSocket-Accept: RNBbeBhCRzVA8/FAE9I48Lo7LWA=
Server: WebSocket++/0.8.3-dev
Upgrade: websocket

Is there a way to test socket.io from Score at the moment ?

[x37v]

@jcelerier sorry for the slow response, pretty busy with the latest release and various tasks around that but I will get to this.

[jcelerier]

thanks for the review @ogauthiersat ! and no worries @x37v, the branch still needs a fair bit of polishing ::)