[v1.12.0] Add `reverse` parameter for fetching tasks

Following the changes related to Meilisearch v1.12.0 mega issue

Description

Add a feature introduced in Meilisearch v1.12.0: the reverse parameter when fetching tasks.

For more information refer to the docs:

• Get tasks

For reference, here is how this method works in JavaScript using meilisearch-js:

const reversedTasks = await client.getTasks({ reverse: true });

Implementation

• [ ] The method to get tasks must accept the new reverse (in meilisearch-js, the equivalent method is getTasks())
• [ ] ⚠️ Add integration tests ⚠️