Summary: Support WebP Animate Format Imaeg Files. To support webp animation, apply webp animation decoder. Test Plan: 1. compile src/exmaple/elementary/image_webp_example_01.c and 02.c 2. run the samples Reviewers: Hermet, kimcinoo, jsuya, bu5hm4n Reviewed By: Hermet, kimcinoo, jsuya Subscribers: cedric, #reviewers, #committers Tags: #efl Differential Revision: https://phab.enlightenment.org/D11876