feat: add initial People Playground mod development kit

extracted_wiki_content/introduction.txt

@@ -0,0 +1,10 @@
+URL: https://wiki.studiominus.nl/intro.html
+Title: People Playground Modding - Introduction
+==================================================
+
+Introduction
+It is recommended you start out with the tutorials and read some of the snippets to get an idea of how things work. Refer to the API documention for more details.
+
+File Structure
+
+Empty mod template