Merge branch 'devs/bu5hm4n/remove-old-focus-api'

This removes the old focus api from elm_widget.
This sadly brings a few breaks with it that will be fixed in the next
few weeks.

There is currently no item-content focus in gengrid, genlist, list.

custom focus chains are not supported right now, calling the api of it
will result in NOPs.

Inline windows are currently also not getting focus, even though they
should.