[make:decorator] Add new maker to create decorator

[GromNaN]

Rebase and continuation of #1613 by @WedgeSama, updated for the current 1.x codebase (config moved from XML to PHP, help files restructured) and with the remaining review feedback from @Neirda24 applied:

• Fixed the getRealId() strict comparison (in_array with strict mode).
• Initialized the short name map entries explicitly instead of relying on implicit array creation, and replaced the array_map/array_unique callable-first-class syntax with a plain foreach.
• Fixed the choice prompt wording ("choose which one you want to decorate:").
• Replaced the ReflectionClass lookup of ContainerInterface constants with a static map for the onInvalid option.
• Added support for variadic parameters when parsing methods to decorate (previously produced an incorrect signature and a broken forwarding call).
• Fixed a typo in an internal exception message.

Add a make:decorator command that generates a decorator class for an existing service. The maker asks for the service to decorate and the class name of the decorator, then generates a class that either implements the decorated service interfaces or extends its class.

bin/console make:decorator Symfony\Component\Routing\Generator\UrlGeneratorInterface MyUrlGenerator

<?php

namespace App;

use Symfony\Component\DependencyInjection\Attribute\AsDecorator;
use Symfony\Component\DependencyInjection\Attribute\AutowireDecorated;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Routing\RequestContext;

#[AsDecorator(UrlGeneratorInterface::class)]
final class MyUrlGenerator implements UrlGeneratorInterface
{
    public function __construct(
        #[AutowireDecorated]
        private readonly UrlGeneratorInterface $inner,
    ) {
    }

    public function generate(string $name, array $parameters = [], int $referenceType = self::ABSOLUTE_PATH): string
    {
        return $this->inner->generate($name, $parameters, $referenceType);
    }

    public function setContext(RequestContext $context): void
    {
        $this->inner->setContext($context);
    }

    public function getContext(): RequestContext
    {
        return $this->inner->getContext();
    }
}

Closes #1401

[GromNaN]

Thank you @WedgeSama for the initial work and @Neirda24 for the review.