efl_canvas_animation_rotate: adjust API

efl_canvas_animation_rotate: adjust API

Summary:
in task T8288 we concluded that a few APIs need to be adjusted in order
to stabelize animation classes at some point. This also adds a new macro
to eina in order to create EINA_VECTOR2 values more easily.

ref T8288

Reviewers: Jaehyun_Cho, segfaultxavi, zmike

Reviewed By: zmike

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8288

Differential Revision: https://phab.enlightenment.org/D10350