浮标点和相机停靠点外置，用resources加载图片，删除脚本文件夹分类

Assets/Prefabs/Buoy.prefab

@@ -263,7 +263,7 @@ RectTransform:
   m_LocalEulerAnglesHint: {x: 0, y: -40, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
-  m_AnchoredPosition: {x: -30.781006, y: -2.4430053}
+  m_AnchoredPosition: {x: -30.781006, y: -2.4429932}
   m_SizeDelta: {x: 2, y: 3}
   m_Pivot: {x: 0.5, y: 0}
 --- !u!223 &272338765191885033
@@ -311,7 +311,7 @@ MonoBehaviour:
   m_FallbackScreenDPI: 96
   m_DefaultSpriteDPI: 96
   m_DynamicPixelsPerUnit: 1
-  m_PresetInfoIsWorld: 1
+  m_PresetInfoIsWorld: 0
 --- !u!114 &1446109474738283892
 MonoBehaviour:
   m_ObjectHideFlags: 0