Add complete bewerbung Next.js application

- Add all Next.js application files
- Include components, app structure, and public assets
- Remove empty bewerbung placeholder folder
- Update .gitignore for Next.js project

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

postcss.config.mjs

@@ -0,0 +1,5 @@
+const config = {
+  plugins: ["@tailwindcss/postcss"],
+};
+
+export default config;