Refactor migrations with $up & $down

system/migrations/1-hooks.sql

@@ -0,0 +1,8 @@
+CREATE TABLE `myaac_hooks`
+(
+	`id` INT(11) NOT NULL AUTO_INCREMENT,
+	`name` VARCHAR(30) NOT NULL DEFAULT '',
+	`type` INT(2) NOT NULL DEFAULT 0,
+	`file` VARCHAR(100) NOT NULL,
+	PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARACTER SET=utf8;