refactor(重构代码): 提升代码质量

ofdgo_res.go

@@ -104,4 +104,5 @@ type CompositeGraphicUnit struct {
 	ImageObject          []ImageObject          `xml:"ImageObject"`
 	CompositeGraphicUnit []CompositeGraphicUnit `xml:"CompositeGraphicUnit"`
 	Clips                *Clips                 `xml:"Clips"`
+	Actions              []Action               `xml:"Actions>Action"`
 }