feat: Initialize frontend with React, Vite, and Tailwind CSS

- Set up main entry point for React application.
- Create About, Home, NotFound, Privacy, and Terms pages with SEO support.
- Implement API service for file uploads and task management.
- Add global styles using Tailwind CSS.
- Create utility functions for SEO and text processing.
- Configure Vite for development and production builds.
- Set up Nginx configuration for serving frontend and backend.
- Add scripts for cleanup of expired files and sitemap generation.
- Implement deployment script for production environment.

.gitignore

@@ -0,0 +1,54 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+*.egg-info/
+dist/
+build/
+*.egg
+.eggs/
+venv/
+.venv/
+env/
+
+# Node
+node_modules/
+frontend/dist/
+frontend/build/
+.npm
+*.tsbuildinfo
+
+# Environment
+.env
+.env.local
+.env.production
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+desktop.ini
+
+# Docker
+docker-compose.override.yml
+
+# Uploads & temp files
+uploads/
+tmp/
+*.tmp
+
+# Logs
+*.log
+logs/
+
+# Coverage
+htmlcov/
+.coverage
+coverage/