This changes a lot of things all across the EFL. Previously,
methods tagged @const had both their external prototype and
internal impl generated with const on object, while property
getters only had const on the external API. This is now changed
and it all has const everywhere.
Ref T6859.
#finally
For now we focus the widgets of a item, the item content can be cycled
by tab / Ctrl + tab. up/down/right/left are for now handled by gengrid
and move the focused item (everything else feels super weird with
multiple contents in a item)
ref T6181