This change enables users to extend the document conversion process with custom logic through plugins.
- Introduced a PluginManager to handle preprocessing and postprocessing plugins in DocumentConverter.
- Updated DocumentConverter to accept and initialize a list of plugins.
- Implemented plugin execution within the document processing pipeline, enabling custom modifications before and after conversion.
- Updated ConversionResult to include metadata about the plugins used during conversion.
- Updated the CLI to accept plugin paths and load them dynamically.
- Expanded documentation with examples for creating and using plugins.
- Added test cases to verify plugin integration and ensure correct execution in various scenarios.
Signed-off-by: Ayoub El Bouchtili <Ayoub.elbouchtili@gmail.com>
