Added promise parameter to then callbacks so callbacks can steal ownership of the value from the promise.
Efl - efl_model_base changed to use eina_promise Eio - eio_model use efl_model_base with promise Eldbus - elddbus models use promise now Elementary - elm_view_list and elm_view_form use new models with promise updated all related examples and tests
The previous naming was redundant and too long.