Consider switching to `Finch` HTTP client

[balexand]

Thanks for creating this awesome library. Would you consider switching the HTTP client from httpoison to finch? Reasons include:

• Finch works better in high throughput scenarios. Using Meilisearch for search as you type can definitely become high throughput. See this post on the Elixir Forum for details.
• Finch is very popular in the Elixir community. It will even be a default dependency in the next release of Phoenix (phoenixframework/phoenix#4876).
• I've personally been bitten by this serious bug in hackney (which httpoison is based on) which crashes the process that calls httpoison. It's quite serious and still unresolved 4 years later despite being the most upvoted issue in hackney. benoitc/hackney#464

If you're open to this then I'd be happy to submit a pull-request updating the Meilisearch.HTTP to use Finch. Thanks.

[Calamari]

Hey @balexand. The current master now contains a version that uses Finch. Check this out, and if you got further great feedback. I am all ears :-)

[balexand]

Awesome, thank you!