feat: add height diff in sync status

Author: LinZexiao

cmd/sync.go

@@ -81,6 +81,9 @@ var storeStatusCmd = &cmds.Command{
 			writer.Println("\tBase:", t.Base.Height(), t.Base.Key().String())
 			writer.Println("\tTarget:", t.Head.Height(), t.Head.Key().String())
 
+			HeightDiff := t.Head.Height() - t.Base.Height()
+			writer.Println("\tHeightDiff:", HeightDiff)
+
 			if t.Current != nil {
 				writer.Println("\tCurrent:", t.Current.Height(), t.Current.Key().String())
 			} else {
@@ -99,6 +102,9 @@ var storeStatusCmd = &cmds.Command{
 			writer.Println("\tBase:", t.Base.Height(), t.Base.Key().String())
 			writer.Println("\tTarget:", t.Head.Height(), t.Head.Key().String())
 
+			HeightDiff := t.Head.Height() - t.Base.Height()
+			writer.Println("\tHeightDiff:", HeightDiff)
+
 			if t.Current != nil {
 				writer.Println("\tCurrent:", t.Current.Height(), t.Current.Key().String())
 			} else {