Migrate the twofactor_backupcodes app to bigint

Signed-off-by: Joas Schilling <coding@schilljs.com>

apps/twofactor_backupcodes/appinfo/info.xml

@@ -5,7 +5,7 @@
 	<description>A two-factor auth backup codes provider</description>
 	<licence>agpl</licence>
 	<author>Christoph Wurst</author>
-	<version>1.2.2</version>
+	<version>1.2.3</version>
 	<namespace>TwoFactorBackupCodes</namespace>
 	<category>other</category>
 

apps/twofactor_backupcodes/lib/Migration/Version1002Date20170919101419.php

@@ -0,0 +1,25 @@
+<?php
+namespace OCA\TwoFactorBackupCodes\Migration;
+
+use Doctrine\DBAL\Schema\Schema;
+use OCP\Migration\BigIntMigration;
+use OCP\Migration\SimpleMigrationStep;
+use OCP\Migration\IOutput;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version1002Date20170919101419 extends BigIntMigration {
+
+	/**
+	 * @return array Returns an array with the following structure
+	 * ['table1' => ['column1', 'column2'], ...]
+	 * @since 13.0.0
+	 */
+	protected function getColumnsByTable() {
+		return [
+			'twofactor_backupcodes' => ['id'],
+		];
+	}
+
+}