feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/moddebugdrawer.txt

@@ -0,0 +1,21 @@
+URL: https://wiki.studiominus.nl/internalReference/ModDebugDrawer.html
+Title: People Playground Modding - ModDebugDrawer
+==================================================
+
+public class ModDebugDrawer
+Utility class that helps the user do immediate drawing operations. An instance is available through ModAPI.Draw
+Methods
+public (constructor) ModDebugDrawer(Stack<System.Action> actions)
+Constructs a debug drawer
+
+public void Line(Vector3 from, Vector3 to)
+Draw a line from one point to another
+
+public void Rect(Vector3 center, Vector3 size)
+Draw a rectangle
+
+public void Circle(Vector3 center, float radius)
+Draw a circle
+
+public void Collider(Collider2D collider)
+Draw a 2D collider's actual hitbox. It supports BoxCollider2D, PolygonCollider2D, EdgeCollider2D, CircleCollider2D