Update for Laravel 8

[asbiin]

No description provided.

[Satariall]

@vluzrmos hello! Could you review a PR, please?

[Satariall]

For other guys who want to use this library for the Laravel 8 project - you may follow a temporary composer method while the maintainer away:

• add this part to the main section of your composer.json:

"repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/asbiin/laravel-language-detector.git"
        }
    ],

Then simply write composer require vluzrmos/language-detector:dev-update-laravel8.
You will use the forked branch. After merge just remove the custom repository part and switch to the right version/branch.

[vluzrmos]

Thanks @asbiin , I released a new tag version v2.2