feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/gaugebehaviour.txt

@@ -0,0 +1,45 @@
+URL: https://wiki.studiominus.nl/internalReference/GaugeBehaviour.html
+Title: People Playground Modding - GaugeBehaviour
+==================================================
+
+public abstract class GaugeBehaviour
+Inherits MonoBehaviour
+Base class for all gauge items
+Fields
+public GameObject GaugeLabelPrefab
+[SkipSerialisation]
+Reference to the little number prefab on the gauge
+
+public Transform Arm
+[SkipSerialisation]
+Reference to the actual gauge arm
+
+public Transform GaugeCenter
+[SkipSerialisation]
+Reference to the transform that represents the center of the gauge display
+
+public float MinAngle
+The minimum arm angle
+
+public float MaxAngle
+The maximum arm angle
+
+public float GaugeRadius
+The radius of the gauge display
+
+public float LabelOffset
+The radial offset of the labels
+
+public int LabelCount
+[Min(2)]
+The amount of labels to generate
+
+Methods
+protected abstract float GetProgress()
+Should be implemented to return the current gauge level from 0.0 to 1.0
+
+protected abstract string GetDisplayValueFor(float progress)
+Should be implemented to return the label text for a given gauge level from 0.0 to 1.0
+
+protected void SetArm(float i)
+Sets the Arm's rotation level to the given gauge level i value from 0.0 to 1.0