New type of widgets: In page widget

[Elius94]

The goal is to make a new kind of widgets. A widget that is printed inside a PageBuilder class, it will use fiew characters or multiple lines but it will embedded inside the rows of the page.
To use the page widgets the user must select one of them (maybe with tab) and use the keyboard, so it's neccessary to add a sort of tabindex on PageBuilder class.
The following list represent some of the possible page widget to do:

• Checkbox / Checkbox Group
• Radio / Radio Group
• Scrollbar
• Ascii Charts
• Table / Grid
• Button

[Elius94]