Redesign UI

[calebe94]

Redesign UI to be less dependent on touch screen precision.

So the idea is to make a UI layout which we can make the UI elements larger.

I do like the actual UI from My-TTGO-Watch. But I think the app icons should be thicker and we can have at most 4 app icons in the tiles.

We can also consider to add navigation arrows, so we don't need to rely on touch screen gestures, such as swipe. I think we can have both at the same time. And we can also expand the gestures by adding long press to it.