Add cargo fmt to the CI

[irevoire]

We should add cargo fmt to the CI once meilisearch/meilisearch-rust#289 is merged

[bidoubiwa]

As #289 has been closed, a PR to format the code is required before adding cargo fmt to the CI.

For those who wants to contribute to the formating of this repo you can re-use the code from this PR #289. They have been mostly reviewed and only required small additional changes

[ghost]

Hi! Can you explain this issue a bit more? Maybe I will be able to take it

[bidoubiwa]

cargo fmt checks the style of your code. The issue must be updated as the PR that was supposed to format the code was closed.

So the idea is

• [ ] format the code using cargo fmt
• [ ] Add format test in the tests.yml ci

[bidoubiwa]

See example here

[ghost]

Thanks a bunch, @bidoubiwa!