feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/mapeditorcatalog.txt

@@ -0,0 +1,55 @@
+URL: https://wiki.studiominus.nl/internalReference/MapEditorCatalog.html
+Title: People Playground Modding - MapEditorCatalog
+==================================================
+
+public class MapEditorCatalog
+Inherits MonoBehaviour
+No description provided
+Fields
+public static MapEditorCatalog Main
+No description provided
+
+public MapEditorAsset SelectedAsset
+No description provided
+
+public Category[] Categories
+No description provided
+
+public Category LocalCategory
+No description provided
+
+public Transform MapContainer
+[Space]
+No description provided
+
+public GameObject CategoryButtonPrefab
+No description provided
+
+public Transform CategoryContainer
+No description provided
+
+public GameObject MapItemButtonPrefab
+No description provided
+
+public Transform MapItemContainer
+No description provided
+
+public TextMeshProUGUI TooltipText
+No description provided
+
+Properties
+public Category SelectedCategory { get; private set; }
+No description provided
+
+Methods
+public void CreateItemButtons()
+No description provided
+
+public void SetFilter(string filter)
+No description provided
+
+public void SetCategory(Category category)
+No description provided
+
+public void Spawn(MapEditorAsset asset, bool flipped)
+No description provided