Add configurable subjects to question sets

administrator/components/com_testquestions/sql/updates/mysql/1.10.0.sql

@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS `#__testquestions_subjects` (
+  `id` int unsigned NOT NULL AUTO_INCREMENT,
+  `title` varchar(150) NOT NULL,
+  `published` tinyint NOT NULL DEFAULT 1,
+  `ordering` int NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `idx_title` (`title`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 DEFAULT COLLATE=utf8mb4_unicode_ci;
+
+ALTER TABLE `#__testquestions_sets`
+  ADD COLUMN `subject_id` int unsigned NOT NULL DEFAULT 0 AFTER `id`;