✨ Feature Request: Add Language Detection Function

[elhadiabdallah]

Hello, and thank you for this helpful library!

I'd like to suggest adding a method to detect the language of a given text, without translating it.
This would be useful in cases where we need to decide whether to translate the text or not.

Example:

$lara = new Translator($credentials);
$lang = $lara->detectLanguage('Bonjour tout le monde'); 
// Returns 'fr'

Thank you!