Feature/cleanup and maintenance

[maschmann]

• Updated API compatibility to modern Ansible (e.g., explicitly prepending 'role' to ansible-galaxy commands).
• Introduced AnsibleGalaxyCollectionInterface for full ansible-galaxy collection support (init, build, publish, install).
• Resolved Symfony\Process argument passing issues to ensure reliable escaping of options.
• Modernized ansible-playbook wrapper by dropping deprecated --su parameters and adding --become-method, --become-password-file, --connection-password-file, and --list-tags.
• Refactored codebase for PHP 8.4 compatibility (e.g., explicitly nullable LoggerInterface parameter).
• Fixed GitHub Actions workflow dependency resolution for PHP 8.2 and 8.3 by broadening phpunit/phpunit version constraints.
• Upgraded Docker development environment to simultaneously support PHP 8.2, 8.3, and 8.4 via compose.yaml profiles/services.
• Created robust DTOs (e.g., ProcessResult) for process output and exit code management.
• Resolved over 30 static analysis and code style errors (phpstan, phpcs).
• General library, static analysis tooling (PHPUnit 13), and test suite upgrades.

[maschmann]

closes #95