[models] update repo model

add `GroupID` and `GroupSortOrder` fields

models/repo/repo.go

@@ -219,6 +219,9 @@ type Repository struct {
 	CreatedUnix  timeutil.TimeStamp `xorm:"INDEX created"`
 	UpdatedUnix  timeutil.TimeStamp `xorm:"INDEX updated"`
 	ArchivedUnix timeutil.TimeStamp `xorm:"DEFAULT 0"`
+
+	GroupID        int64 `xorm:"DEFAULT NULL"`
+	GroupSortOrder int
 }
 
 func init() {