Escape index id properly

[Meldiron]

Before, attempt to create index with id order would fail:

CREATE INDEX order ON `appwrite`.`_project_dev_collection_posts` ( `title`(255) ASC );

appwrite-worker-database        | SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'order ON `appwrite`.`_project_dev_collection_posts` ( `title`(255) ASC )' at line 1

With this PR, order is a valid ID of the key.

[Meldiron]

The attribute key seems to be escaped properly here: https://github.com/utopia-php/database/blob/main/src/Database/Adapter/MariaDB.php#L145