Add test duration content and image to sets

administrator/components/com_testquestions/sql/install.mysql.utf8mb4.sql

@@ -42,6 +42,9 @@ CREATE TABLE IF NOT EXISTS `#__testquestions_sets` (
   `id` int unsigned NOT NULL AUTO_INCREMENT,
   `subject_id` int unsigned NOT NULL DEFAULT 0,
   `title` varchar(255) NOT NULL,
+  `duration` smallint unsigned NOT NULL DEFAULT 0,
+  `test_content` text NULL,
+  `image` varchar(1024) NOT NULL DEFAULT '',
   `description` text NULL,
   `published` tinyint NOT NULL DEFAULT 1,
   `ordering` int NOT NULL DEFAULT 0,