Fix #128: remove symfony/console dependency by adopting Entropy

[HecFranco]

Fixes #128

Summary

Resolves the Composer dependency conflict reported in #128 by removing the direct symfony/console requirement and adopting Entropy as the console layer.

Projects using Symfony 8 (e.g. symfony/yaml ^8.1) could not install rector/swiss-knife because the package required symfony/console ^6.4.24, which conflicts with Symfony 8 components. This PR fixes that root cause instead of widening the symfony/console constraint (see maintainer feedback on #129).

What changed

• Remove symfony/console from composer.json
• Bump entropy/entropy to ^0.4.0
• Replace SymfonyStyle with Entropy\Console\Output\OutputPrinter in CLI commands and ClassConstantFetchFinder
• Replace Symfony ProgressBar with Entropy\Console\Output\ProgressBar where needed
• Remove manual SymfonyStyle registration from ContainerFactory

Test plan

• composer validate
• vendor/bin/phpunit
• vendor/bin/phpstan analyse
• vendor/bin/ecs check
• vendor/bin/composer-dependency-analyser
• bin/swiss-knife --help
• No direct Symfony\Component\Console usage in src, tests, bin, config

[HecFranco]

@TomasVotruba Ready for review.
This addresses #128: projects on Symfony 8 could not install rector/swiss-knife due to the symfony/console ^6.4.24 constraint. Instead of widening that constraint (#129), the package now uses Entropy (OutputPrinter, ProgressBar) and drops the direct symfony/console dependency.
Verified locally:

• composer validate
• vendor/bin/phpunit
• vendor/bin/phpstan analyse
• vendor/bin/ecs check
• vendor/bin/composer-dependency-analyser
• bin/swiss-knife --help
  If this looks good to you, I think it’s ready to merge. Thanks!

[TomasVotruba]

Looks good💪