Made login attempts functions OOP.

database/2020_05_25_133726_login_attempts_table_fixes.php

@@ -0,0 +1,21 @@
+<?php
+namespace Misuzu\DatabaseMigrations\LoginAttemptsTableFixes;
+
+use PDO;
+
+function migrate_up(PDO $conn): void {
+    $conn->exec("
+        ALTER TABLE `msz_login_attempts`
+            DROP COLUMN `attempt_id`,
+            ADD INDEX `login_attempts_created_index` (`attempt_created`);
+    ");
+}
+
+function migrate_down(PDO $conn): void {
+    $conn->exec("
+        ALTER TABLE `msz_login_attempts`
+            ADD COLUMN `attempt_id` INT UNSIGNED NOT NULL AUTO_INCREMENT FIRST,
+            DROP INDEX `login_attempts_created_index`,
+            ADD PRIMARY KEY (`attempt_id`);
+    ");
+}