ADD : 옵티트랙 마커 드로우 토글 기능 추가

Assets/External/OptiTrack Unity Plugin/OptiTrack/Scripts/OptitrackStreamingClient.cs

@@ -787,6 +787,12 @@ public class OptitrackStreamingClient : MonoBehaviour
             Debug.LogError("OptiTrack: 클라이언트가 연결되지 않았습니다.");
         }
     }
+
+    public void ToggleDrawMarkers()
+    {
+        DrawMarkers = !DrawMarkers;
+        Debug.Log($"OptiTrack: DrawMarkers = {DrawMarkers}");
+    }
     #endregion