[FE-PAGE-006] fe-page: Complete Marketplace page implementation
- Added product browsing with pagination (page, limit, total_pages)
- Added product filtering: search, product type, price range
- Added cart functionality: add, remove, update quantity, checkout
- Created cartStore with Zustand and persistence
- Added Cart component with checkout functionality
- Enhanced ProductCard with Add to Cart button
- Added filter UI with collapsible filters panel
- Added search bar for product search
- Added pagination controls (Previous/Next)
- Updated marketplaceService to support filters and pagination
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