Refactor parameters structure and update related components

- Changed `AudioParameters` to `audioParameters` and updated references in FFmpegProcessor and main.ts.
- Introduced `generalParameters` and `videoParameters` to encapsulate related settings.
- Updated the handling of parameters in the HomePage, AudioParameters, Parameters, and VideoParameters components.
- Refactored SideBar to initialize parameters correctly and handle split/merge settings.
- Improved state management and data flow for audio and video parameters.
- Added error handling and logging for better debugging.