efl_ui_range_display: move events from spin

efl_ui_range_display: move events from spin

we concluded min,reached and max,reached should be on every widget that
implements range_display. This here is the start of that work, the
events are moved, next commit fixes all widgets, the last commits
enables tests in the spec unit test.

ref T7897
ref T7895

Differential Revision: https://phab.enlightenment.org/D9371