No more steamcmd

[BrettMayson]

No description provided.

[Copilot]

Pull Request Overview

This PR adds functionality to create lowercase symbolic links for downloaded workshop content, likely to handle case-sensitivity issues in file systems. The implementation creates a mirror directory structure with all lowercase file and directory names that symlink back to the original workshop content.

• Adds a new lowercase_symlinks() function that creates lowercase symlinks for workshop content
• Modifies the preset() function to call the new lowercase symlink function and update directory paths
• Changes the moddir path construction to use the new lowercase workshop directory

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