[v1.17.0] Add support for webhook API

[Strift]

Description

We want to add the necessary methods in this SDK to interact with the Webhook API. This feature is introduced in Meilisearch 1.17.0, see releases.

For more context, please see:

• the usage guide
• the related issue in Meilisearch: https://github.com/meilisearch/meilisearch/issues/5792

Tasks

• [ ] Add the new methods to interact with the Meilisearch API
• [ ] Add new tests cases
• [ ] Add code samples in .code-samples.meilisearch.yaml for the following keys: webhooks_get_1, webhooks_get_single_1, webhooks_post_1, webhooks_patch_1, webhooks_delete_1. They should perform the same action as the curl calls in Meilisearch docs