Revamp Home.razor with modern UI and feature updates

Enhanced the Home.razor page with a modern, feature-rich layout:
- Added a hero section with call-to-action buttons and GPT model support.
- Introduced value proposition cards and detailed feature tabs.
- Added workflow tabs to explain the step-by-step process.
- Highlighted target users with dedicated cards.
- Included an FAQ section and a call-to-action footer.
- Improved layout and responsiveness using Radzen components.
- Refactored conditional rendering and state management for tabs.
- Removed the old welcome section and replaced it with a polished design.

Author: ADefWebserver