Add a method to delete the index only if it already exists

[curquiza]

Trying to delete an index that does not exist on the MeiliSearch server will throw an error. To delete it without any error no matter what if it exists or not, we need a new method.

• Add a method delete_index_if_exists: it deletes the index but does not throw any error if the index does not exist.
• Add tests

Example: https://github.com/meilisearch/meilisearch-python/pull/268/files

⚠️ This issue is generated, and delete_index_if_exists might be named differently in this package. Keep the already existing way of naming in this package to stay idomatic with the language and the repository.

Related to meilisearch/integration-guides#107

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

[bkaur-bkj]

@curquiza pls let me know about the status of this issue if any changes? if still pending can you pls assign this issue to me

[alallema]

Hi @bkaur-bkj,
This issue is still open. I assigned you on it! :)

[bkaur-bkj]

My ide is showing some issues with configuration so unassigning it for now

[alallema]

Thanks for telling us.

[adrianrojek]

Hello, is this issue still open ? I'd like to help, could you assign it to me please?

[alallema]

Hi @adrianrojek,
Yes this PR is still open.
We don't want to assign people to our issues because sometimes people ask to be assigned and never come back, which discourages the real volunteers contributors to open a PR to fix this issue.
We will accept and merge the first PR that fixes correctly and well implements the issue following our contributing guidelines.

[ezienecker]

I provide a PR: #248