Widget creator

[codyduong]

We need a method to easily obtain a specific UserData for a widget rather than going (get_widgets) on the bar, then the child, and so on.

local my_widget = hitokage.unstable.widget.create(
  { Box = { ... } }
);

It would have to return a Some<BoxUserData>, which we would have to query :is_ready() on.

Alternatively, we can implement a utility function on BarUserData. Store all ids somewhere.

bar:get_widget_by_id()
bar:get_widgets_by_type(type)

[codyduong]

To accept props we would have to consider

local my_widget = hitokage.unstable.widget.create("MyWidget", function(props)
  { Box = { ... } }
end );