[Meilisearch v1.13.0] Add method to get tasks documents

[Strift]

Context

Meilisearch 1.13 introduces a method to get tasks documents.

Description

We want to add a method to this SDK to interact with the GET /tasks/{task_id}/documents API endpoint.

Tasks

• Update API method to allow retrieving a tasks documents
• Add test cases for the new method
• Add an example under the get_task_documents_1 YAML key in .code-samples.meilisearch.yaml. It should match the example in the documentation.