feat: Implement batch generation for profiles and drafts
- Added BatchCreationService to handle the generation of drafts and full profiles for personas and businesses.
- Introduced new utility functions in batchGenerationHelper for generating drafts and full profiles based on variable combinations.
- Created dialog components for reviewing drafts and displaying generation progress.
- Enhanced existing components to support AI-generated data handling for multiple items.
- Improved error handling and state management during the generation process.
- Updated various Svelte components to ensure compatibility with new batch generation features.