feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/actonuserdelete.txt

@@ -0,0 +1,19 @@
+URL: https://wiki.studiominus.nl/internalReference/ActOnUserDelete.html
+Title: People Playground Modding - ActOnUserDelete
+==================================================
+
+public class ActOnUserDelete
+Inherits MonoBehaviour, Messages.IOnUserDelete
+Behaviour that invokes an event when it is deleted by the player
+Fields
+public UnityEvent Event
+[SkipSerialisation]
+The event that is invoked
+
+public GameObject[] DestroyWith
+[SkipSerialisation]
+An array of other objects that will be destroyed when this object is deleted by the player
+
+Methods
+public void OnUserDelete()
+No description provided