Add output argument to control file creation vs console output in generate command

[httpdss]

Description

This PR adds support for an --output argument to the generate command, allowing users to choose between creating files on disk (file mode, default) or printing the generated file paths and contents to the console (console mode). This is useful for testing and previewing structure generation without making changes to the filesystem.

• When --output console is set, no files or directories are created. Instead, the tool prints what would be created.
• When --output file (default), the tool behaves as before, creating files and directories as specified.

Issue Addressed

• Implements feature request for dry-run/preview mode via console output.

Additional Context

• Directory creation and file writing are both skipped in console mode.
• Logging and output are updated to reflect the chosen mode.

Checklist

• Follows coding standards and contributing guidelines
• Adds or updates tests as needed
• Documentation updated if required
• Manually tested both output modes

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Please review and provide feedback or merge if approved.

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