- importing FQCNs

[krzysztofrewak]

With this PR this code:

<?php

class TestException extends \Exception
{
    protected string $rules = "\Blumilk\Codestyle\Configuration\Defaults\LaravelPaths";

    public function rules(\Blumilk\Codestyle\Configuration\Defaults\CommonRules $rules): void
    {
        echo 123;
    }
}

should be transformed into:

<?php

declare(strict_types=1);

use Blumilk\Codestyle\Configuration\Defaults\CommonRules;
use Blumilk\Codestyle\Configuration\Defaults\LaravelPaths;

class TestException extends Exception
{
    protected string $rules = LaravelPaths::class;

    public function rules(CommonRules $rules): void
    {
        echo 123;
    }
}

So:

• all imports should be imported in import section
• all hardcoded class names should be transformed to FQCNs and imported as well

Additionally:

• deprecated CurlyBracesPositionFixer was replaced with BracesPositionFixer
• deprecated NewWithBracesFixer was replaced with NewWithParenthesesFixer
• deprecated CompactNullableTypehintFixer was replaced with CompactNullableTypeDeclarationFixer

For now it won't pass test cases, as priority of one of new fixers is wrong. We need to wait until PHP-CS-Fixer/PHP-CS-Fixer#7767 would be merged.