Configure the CSV delimiter when updating documents

[Bruno Casali]

⚠️ 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, feel free to add any clarification and instruction about this issue.

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

Related to meilisearch/integration-guides#251

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Related to:

• issue: meilisearch/meilisearch#3442 and meilisearch/meilisearch#3533
• spec: meilisearch/specifications#221

Add support for passing csvDelimiter query parameter to the PUT and POST /indexes/:indexUid/documents with content-type text/csv (example of the real method names: updateDocuments, addDocuments).

Also, a new error code is introduced, invalid_document_csv_delimiter. Pay attention to the strongly typed languages.

TODO:

• Add the new argument to the csv document handler methods.
• Add tests