Migration for adding system data table

core/migrations/v20210606_290003_system_meta_data.php

@@ -0,0 +1,22 @@
+<?php
+namespace Classes\Migration;
+
+class v20210606_290003_system_meta_data extends AbstractMigration {
+
+    public function up(){
+        $sql = <<<'SQL'
+create table `SystemData` (
+	`id` bigint(20) NOT NULL AUTO_INCREMENT,
+	`name` varchar(50) not null,
+	`value` text default null,
+	primary key  (`id`),
+	unique key `name` (`name`)
+) engine=innodb default charset=utf8;
+SQL;
+        return $this->executeQuery($sql);
+    }
+
+    public function down(){
+        return true;
+    }
+}