Currently, in the tests (especially KeysAndPermissionsTest.php) we manually remove the created keys using $this->client->deleteKey. This is good, but we can do better.
The idea of this issue is to create a way of doing that for every test. We can use setUp() hook for that.
This will probably break some tests where we rely on the default keys created by Meilisearch automatically, those tests now should set up their own keys before asserting on them.