让Duilib完美支持gif

[{"title":"（ 7 个子文件 24KB ） 让Duilib完美支持gif","children":[{"title":"UIGifAnim.cpp <span style='color:#111;'> 6.20KB </span>","children":null,"spread":false},{"title":"UIRender.h <span style='color:#111;'> 2.50KB </span>","children":null,"spread":false},{"title":"UIRender.cpp <span style='color:#111;'> 90.34KB </span>","children":null,"spread":false},{"title":"UIDlgBuilder.cpp <span style='color:#111;'> 20.82KB </span>","children":null,"spread":false},{"title":"UIlib.h <span style='color:#111;'> 3.89KB </span>","children":null,"spread":false},{"title":"UIGifAnim.h <span style='color:#111;'> 797B </span>","children":null,"spread":false},{"title":"UIDefine.h <span style='color:#111;'> 10.65KB </span>","children":null,"spread":false}],"spread":true}]