enable room creator service by default (#3043)

pkg/config/config.go

@@ -546,6 +546,7 @@ var DefaultConfig = Config{
 		},
 		EmptyTimeout:       5 * 60,
 		DepartureTimeout:   20,
+		CreateRoomEnabled:  true,
 		CreateRoomTimeout:  10 * time.Second,
 		CreateRoomAttempts: 3,
 	},