feat: add inventory management system with product, category, and movement tracking

- Implemented global styles using Tailwind CSS for consistent theming.
- Created layout component to structure the application with a navigation bar.
- Developed Movements page to handle inventory entries and exits, including form submission and data display.
- Added Products page for listing, editing, and deleting products with API integration.
- Introduced Categories management functionality.
- Built Navbar component for easy navigation across the application.
- Established API service for handling requests to the backend.
- Defined TypeScript types for Category, Product, and InventoryMovement to ensure type safety.
- Configured TypeScript settings for the project.

frontend/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# env files (can opt-in for committing if needed)
+.env*
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts