feat: add ability to intercept websocket messages

fix: listen close event from client and server

 feat: ability to subscribe on websocket client/server senders

 feat: pass request object to message interceptors

…socket

fix: correctly close half-opened socket

…ose_client_socket

fix: close proxy socket on client socket "close" event

…-1355

…-1339

…-1147

…-1117

…-1362

…-1267