Update spinner messages to reflect file upload actions across multiple classes

Remove commented error messages for invalid file formats in Seo and SeoOffPage classes

Refactor Seo class: remove request_model method and update error handling for file uploads

Fix: Add user feedback for incorrect file formats in SEO analysis

Fix: Handle exceptions for session state retrieval in SEO analysis and update web analytics input placeholder

Add SEO analysis modules and refactor existing code

Fix: Remove debug print statements and update run_analysis to be asynchronous

Refactor: Clean up code structure and improve file upload handling

Fix: Name Tags

Fix: removed dialogue box pop up when file upload element is empty

Feat: Added Website traffic, social media, and website performance category on the UI