[Feature] Ability to typecast on demand

[mathieutu]

Hi,

Thanks for your work.

For most of my calls, I don't want to create new select options automatically.

However, I'd like to do it for one. It could be great to not have to enable the options for all calls, and to allow passing directly the arguments to the calls.

Ex: Airtable::create(['name' => 'myName'], ['typecast' => true]);

Happy to do the PR if you're ok with that.
Mathieu