feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/ebikebehaviour.txt

@@ -0,0 +1,22 @@
+URL: https://wiki.studiominus.nl/internalReference/EBikeBehaviour.html
+Title: People Playground Modding - EBikeBehaviour
+==================================================
+
+public class EBikeBehaviour
+Inherits MonoBehaviour, Messages.IUse
+Controls the bike
+Fields
+public bool Activated
+Is the bike activated?
+
+public float Speed
+[SkipSerialisation]
+Target motor speed
+
+public HingeJoint2D Hinge
+[SkipSerialisation]
+Reference to the motorised HingeJoint2D
+
+Methods
+public void Use(ActivationPropagation activation)
+No description provided