feat: Refactor OutputPath component to include DarkModeSwitch and improve IPC handling

refactor: Remove Settings component and clean up AudioParameters component

style: Update Parameters CSS for better layout and theming support

fix: Adjust VideoParameters component to use new render functions and improve quality mode handling

chore: Introduce theme management and CSS variables for consistent styling

delete: Remove unused SubtParameters and SplitMergeParameters CSS files

style: Enhance SideBar styling for better UI consistency and responsiveness

feat: Implement theme switching functionality with new Theme.tsx and variables.css