Rewrite the WebWolf Introduction Lesson with the new changes

[aolle]

After the last refactoring, the WebWolf introduction lesson should be rewritten, as we are not going to provide a standalone WebWolf jar anymore, right?

http://127.0.0.1:8080/WebGoat/start.mvc#lesson/WebWolfIntroduction.lesson

[zubcevic]

As far as the text is concerned there are probably some areas that need to be re-written. But it still acts as a separate web site and can be configured on different host names as well. The default URL's for the browser are also still the same

[nbaars]

Updated the text, the icon will guide users to WebWolf

[nbaars]

Closing as we released 2023.3