elm: add basics test to create a destroy *every* widget with errors

elm: add basics test to create a destroy *every* widget with errors

this simply creates packs, resizes, and destroys every single widget
that we have in legacy elm.

This i made to ensure that there are no mistakes in the construction
chain. Additionally, a second test case checks that creation with none
elm parents is erroring but not failing, this seems weird, but we have
provided that in the past, so we should continue providing this.

Differential Revision: https://phab.enlightenment.org/D10088