feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/toolbehaviour.txt

@@ -0,0 +1,42 @@
+URL: https://wiki.studiominus.nl/internalReference/ToolBehaviour.html
+Title: People Playground Modding - ToolBehaviour
+==================================================
+
+public abstract class ToolBehaviour
+Inherits MonoBehaviour
+No description provided
+Fields
+public PhysicalBehaviour ActiveSingleSelected
+No description provided
+
+public Rigidbody2D Rigidbody
+No description provided
+
+Properties
+public virtual bool UsesEmptyDrag
+No description provided
+
+public virtual bool HideHeldOutline
+No description provided
+
+public virtual bool ShowOutlineOnlyOnHover
+No description provided
+
+Methods
+public abstract void OnToolChosen()
+No description provided
+
+public abstract void OnToolUnchosen()
+No description provided
+
+public abstract void OnSelect()
+No description provided
+
+public abstract void OnHold()
+No description provided
+
+public abstract void OnFixedHold()
+No description provided
+
+public abstract void OnDeselect()
+No description provided