Enhance `mc-apply.py` with `configuration.py` features and value normalization:
- Verbose logging system with `--verbose` flag (0-2 levels)
- `fetch_example()` to download configs from GitHub (`examples/path` or URLs)
- `disable_all_options()` to comment out all `#define` statements
- Special directives support via directives JSON key
- Support for `[disable]`, `examples/path`, and direct URL directives
Implement value normalization for consistent behavior:
- "on", "true", true, "" => enable (uncomment `#define`)
- "off", "false", false => disable (comment out `#define`)
- All other values => set value (`#define OPTION value`)
Update example marlin_config.json to demonstrate different value formats and directive usage. Changes are fully backward compatible with existing JSON configuration files.
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