feat: add new UI components for product reviews, promotions, seller summaries, support center, and request forms

- Created ProductReviewCard component for displaying product reviews with options to edit and delete.
- Implemented PromoCard component for promotional content with navigation support.
- Added RoundImageLabel component for displaying images with labels in a circular format.
- Developed SellerSummary component to showcase seller information and actions.
- Introduced SupportCenter component for user support with FAQs and action buttons.
- Created SupportRequestForm component for submitting support requests with attachments.
- Added Tabs component for organizing content into tabbed sections, including product descriptions and reviews.
- Implemented utility function for class name merging.
- Defined TypeScript interfaces for User, Product, Order, and OrderItem.
- Configured TypeScript settings in tsconfig.json for improved type checking and module resolution.

.gitignore

@@ -0,0 +1,35 @@
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+.yarn/install-state.gz
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env*.local
+.env
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts