feat: 添加购买记录分页功能

backend_v1/app/services/posts.go

@@ -115,6 +115,8 @@ func (m *posts) Bought(ctx context.Context, userId int64, pagination *requests.P
 		RightJoin(tblUserPost, tbl.ID.EqCol(tblUserPost.PostID)).
 		Where(tblUserPost.UserID.Eq(userId)).
 		Order(tblUserPost.CreatedAt.Desc()).
+		Limit(int(pagination.Limit)).
+		Offset(int(pagination.Offset())).
 		Scan(&retItems)
 	if err != nil {
 		return nil, err