Add Reverse ordering support for Task API

[ma1581]

Pull Request

Related issue

Fixes #798

What does this PR do?

• Accepts 'reverse' field to provider ordering flexibility

PR checklist

Please check if your PR fulfills the following requirements:

• [ Y ] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• [ Y ] Have you read the contributing guidelines?
• [ Y ] Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!

[Strift]

Hi @ma1581, thank you for your PR. 🙌

I merged the changes from the main branch (related to your other PR.) But now, the tests are not passing. Can you look into it?

Thanks!