EventBroadcaster: Introduce connect & close + Clean code a bit#82

roekatz wants to merge 1 commit intomasterpermitio/fastapi_websocket_pubsub:masterfrom

roe/per-10361-fix-opal-server-eventbroadcaster-integrationpermitio/fastapi_websocket_pubsub:roe/per-10361-fix-opal-server-eventbroadcaster-integrationCopy head branch name to clipboard