✨ Introduce seasonal styles and image generation tasks

Add a comprehensive styles configuration, rename theme identifiers, and implement tasks for generating styled images. Include tests for large styled image generation to ensure functionality. :sparkles: Introduce photo upload and generation features Add new views for photo upload and generation previews, along with integration tests to ensure functionality. Implement BYOK (Bring Your Own Key) support for credit-free previews and enhance the generation process with improved UI and animations. :sparkles: Update pricing page test for accuracy Correct expected text in the pricing page test to reflect current offering of "Free forever" instead of "Free with your own key". :sparkles: Update pricing plans and UI elements Revise pricing structure to introduce a new credit pack option. Update UI text and layout for clarity and improved user experience.