Support for KaiOS' pad navigation

[danimesq]

Should support views (menus), and not only navigation but also pressing enter.

• https://codepen.io/ssigmond/pen/eEXKgZ (doesn't support [enter] at a selected item)
• /home/daniell/Desktop/Organize/KaiOS apps INSP
• https://github.com/kaiostech/sample-vanilla
• https://github.com/FrameworkJavascript/vanillai
• https://github.com/FrameworkJavascript/naviboard
• Work with js2me (https://github.com/FloflisPull/js2me) as the strongest example app that can work both in Firefox OS+Web! (should be ported to KaiOS using FMWK - helpful map project: https://gitlab.com/suborg/project-kava)

[danimesq]

As for option inputs, probably KaiOS have built-in support for navigation menus. Have to investigate this.