#43 - named parameters fixer

[kamilpiech97]

Should close #43.
Added named parameters fixer and tests for that fixer.

Before:

<?php

$class = new ErrorsThresholdExceeded(
    requestsNumber :$requests,
    errorsNumber   :  $errors,
    percentage     :          $percentage,
);

$result = $reader->merge($merge, new Api(), flag     :   CONSTANT);

After:

<?php

declare(strict_types=1);

$class = new ErrorsThresholdExceeded(
    requestsNumber: $requests,
    errorsNumber: $errors,
    percentage: $percentage,
);

$result = $reader->merge($merge, new Api(), flag: CONSTANT);