Normalize autoload path separators to forward slashes (Unix-like systems compatibility)

[IvanCraft623]

The autoload section in composer.json declares PSR-4 paths using
Windows-style backslashes:

"psr-4": {"CortexPE\\Commando\\": ["src\\CortexPE\\Commando\\"]}

Forward slashes are the standard for autoload paths in composer.json, regardless of the operating system. Using backslashes in path values is non-standard and breaks on Unix-like systems.

The Composer schema documentation for PSR-4 exclusively uses forward slashes in all its examples:

"autoload": {
    "psr-4": {
        "Monolog\\": "src/",
        "Vendor\\Namespace\\": ""
    }
}

This can be seen in a real CI failure caused by this exact issue:
https://github.com/IvanCraft623/RankSystem/actions/runs/30519132597/job/90795453857