Using ReorderableList on the Collection Editor.

Changed

• Refactored the ScriptableObjectCollection Custom Editor to use ReorderableList instead of the previous custom list drawer
• Refactored the editor prefab property drawer to properly draw the SerializedProperties of the item instead of displaying the custom inspector
• Removed some old files and methods that aren't necessary anymore.
• When using the inline visualizer of the CollectionItem, it should now respect position (if is inside an array or custom propery drawer)

Added

• Added context click on the items, you can now Copy Paste values between collection items and Duplicate and Delete items when right click on it on the Editor