feat: add initial People Playground mod development kit

extracted_wiki_content/internalReference/textureoverride.txt

@@ -0,0 +1,16 @@
+URL: https://wiki.studiominus.nl/internalReference/TextureOverride.html
+Title: People Playground Modding - TextureOverride
+==================================================
+
+public struct TextureOverride
+[System.Serializable]
+No description provided
+Fields
+public string Id
+Identity of the object you wish to override
+
+public string[] Textures
+Array of all textures, ordered hierarchically. The first entry is the base object, the following entries are its children.
+
+public string[] Random
+In case the object has a random sprite, you can override them here. When this array has entries, the first entry of the Textures array is ignored.