feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/ceilingturretbehaviour.txt

@@ -0,0 +1,39 @@
+URL: https://wiki.studiominus.nl/internalReference/CeilingTurretBehaviour.html
+Title: People Playground Modding - CeilingTurretBehaviour
+==================================================
+
+public class CeilingTurretBehaviour
+Inherits MonoBehaviour
+Controls the ceiling turret
+Fields
+public float SightRadius
+[SkipSerialisation]
+The entity detection radius of the turret in game units, not meters
+
+public float MotorSpeedMultiplier
+[SkipSerialisation]
+How much faster should the motor rotate?
+
+public LayerMask LayerMask
+[SkipSerialisation]
+What layers should be considered when scanning for entities?
+
+public FirearmBehaviour FirearmBehaviour
+[SkipSerialisation]
+A reference to the FirearmBehaviour that actually does the shooting
+
+public HingeJoint2D Joint
+[SkipSerialisation]
+A reference to the HingeJoint2D that controls the barrel
+
+public UnityEngine.Events.UnityEvent OnSight
+[SkipSerialisation]
+Event that is invoked when the turret sees someone
+
+public UnityEngine.Events.UnityEvent OnLoseTarget
+[SkipSerialisation]
+Event that is invoked when the turret loses sight of its target
+
+public float SweepAnimationSpeed
+[SkipSerialisation]
+How fast should the sweeping animation go?