Brief overview of PR changes/additions

Created a file src/tutorial-loader.xml to load and display the tutorial and then linked it to the main app

Motivation for adding to Mudlet

I want to improve my skills

Other info (issues closed, discussion etc)

The screencast is here: https://github.com/user-attachments/assets/8b2a4a27-1084-43a0-8404-60905b345482 /claim #3072 /closes #3072