feat: Refine 2fa (#11766)

* wip

* Update 2fa.qrdialog.vue

* Update 2fa.vue

* Update CHANGELOG.md

* tweak

* ✌️

packages/backend/migration/1690569881926-user-2fa-backup-codes.js

@@ -0,0 +1,11 @@
+export class User2faBackupCodes1690569881926 {
+	name = 'User2faBackupCodes1690569881926'
+
+	async up(queryRunner) {
+		await queryRunner.query(`ALTER TABLE "user_profile" ADD "twoFactorBackupSecret" character varying array`);
+	}
+
+	async down(queryRunner) {
+		await queryRunner.query(`ALTER TABLE "user_profile" DROP COLUMN "twoFactorBackupSecret"`);
+	}
+}