Add radio layout support

[SaifJerbi]

In order to support this new layout we have to :

• Add new @Radiobox annotation with appropriate fields
• Implement the RadioBoxGenerator
• Improve the demo app to support the radioBox layout

[DhiaEddineSaidi]

Please asseign me this ticket

[SaifJerbi]

Issue assigned to @DhiaEddineSaidi