feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/gearbehaviour.txt

@@ -0,0 +1,27 @@
+URL: https://wiki.studiominus.nl/internalReference/GearBehaviour.html
+Title: People Playground Modding - GearBehaviour
+==================================================
+
+public class GearBehaviour
+Inherits MonoBehaviour
+[System.Obsolete]
+Behaviour of all gears
+Fields
+public int ToothCount
+[SkipSerialisation]
+How many teeth the gear has. Determines gear ratio.
+
+public PhysicalBehaviour Phys
+[SkipSerialisation]
+Reference to the PhysicalBehaviour
+
+public LayerMask GearLayer
+[SkipSerialisation]
+What layers should be considered when checking for other gears?
+
+Methods
+public void ManagedUpdate(float dt)
+No description provided
+
+public void ManagedLateUpdate()
+No description provided