Ensure the error handling are following the best practice

[brunoocasali]

⚠️ This issue is generated, it means the examples and the namings do not necessarily correspond to the language of this repository.
Also, if you are a maintainer, please add any clarification and instructions about this issue.

Sorry if this is already wholly/partially implemented. Feel free to let me know about the state of this issue in the repo.

Related to meilisearch/integration-guides#267

---

⚠️ For more information, check meilisearch/integration-guides#267

Ensure this SDK follows the following guidelines:

• All the errors > 400 without a message should be sent as MeilisearchCommunicationError
• Know errors like index is not found, or mistakes in the request like not-allowed params should be sent as MeilisearchApiError
• Any other error should be a MeilisearchException

Essentially all the error should extend from MeilisearchException, the consumers should have a way to catch all the errors.
Let us know if this is unclear or you have a better idea!

TODO:

• Create a base error called MeilisearchException which will extend the standard error if it does not exist (when the language supports)
• Make all the other errors extend this error.
• Move all errors without message to MeilisearchCommunicationError since it is not a Meilisearch error anyway.

[ahmednfwela]

@brunoocasali I suggest making it MeilisearchException instead of MeilisearchError

[brunoocasali]

Done! @ahmednfwela