유니티 현재의 씬 다시 불러오기

Docs : https://docs.unity3d.com/ScriptReference/SceneManagement.Scene-buildIndex.html
http://lonpeach.com/2017/01/27/unity3d-how-to-load-current-level-or-scene/

SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex);