https://ultromanthetacoman.wordpress.com/2018/02/23/draw-unselected-colliders-in-unity/
https://forum.unity.com/threads/show-all-colliders-in-editor-solved.60352/
1. 2d在Edit > Project Settings > Physics 2D > Gizmos > Always Show Colliders
2.Physics Debug
3.读取gameobject中collider com，使用OnDrawGizmos自行绘制
