feat: initialize frontend with Next.js, Tailwind CSS, and internationalization support

- Added package.json for project dependencies and scripts
- Configured PostCSS with Tailwind CSS
- Created global styles and theme context for dark mode support
- Implemented layout and routing for internationalization using next-intl
- Developed main components: Header, Footer, Hero, About, Skills, Projects, Contact
- Added language switcher and contact form with validation
- Created project card component to display project details
- Set up localization files for English and Portuguese
- Configured Tailwind CSS for styling and responsive design
- Added favicon and logo assets

frontend/next.config.ts

@@ -0,0 +1,7 @@
+import type { NextConfig } from "next";
+import createNextIntlPlugin from 'next-intl/plugin';
+
+const nextConfig: NextConfig = {};
+const withNextIntl = createNextIntlPlugin();
+
+export default withNextIntl(nextConfig);