feat(websocket)!: Implement WebSocket connection and event handling (#82)

Co-authored-by: LQ63 <lkhermann@web.de>
Reviewed-on: #82
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/views/ingame/finishedMatch.scala.html

@@ -34,4 +34,5 @@
             });
         }
         waitForFunction("pollForUpdates").then(fn => fn('@gamelobby.id'));
+    connectWebSocket()
 </script>