New example: How to create custom introduction page.

Introduction page cannot be modified same way as other pages due components have not been loaded so that the scripts have no effect yet. Only Controller scripts can be used.

This has also been reported in:https://bugreports.qt.io/browse/QTIFW-1033 where widgets appear to the introduction page only after once the user has moved to the next page and moves back.

Could there be an example how user could create their own introduction page or modify the current one with widgets if possible?