A SVG coder plugin for SDWebImage, using Apple's built-in framework
Note: Some user report that Apple's CoreSVG has compatible issue for some SVGs (like using non-system Font, gradient), from v1.7.0 we protect some cases, but other exceptions are un-catchable. For these crashes, either use Render SVG as bitmap image
(see below) or edit your SVG source file to make Apple's CoeSVG compatible.