Description: add compile option for graphic_gif

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I4TZGV
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

config/subsystem/graphic/config.gni

@@ -17,4 +17,5 @@ declare_args() {
   enable_graphic_font = false
   enable_graphic_dualcore = false
   enable_video_component = false
+  enable_graphic_gif = true
 }