refactor: migrate from MUI to Ant Design for layout and components

- Updated package.json to remove MUI dependencies and add Ant Design.
- Refactored App component to use Ant Design's Layout, Header, Footer, and Sidebar.
- Created new Footer, Header, and Sidebar components using Ant Design.
- Removed old Header component that used MUI.
- Updated Home component to use Ant Design's Typography and Button.
- Added global styles in index.less and theme styles in theme.less and layout.less.
- Removed MUI theme configuration and replaced it with Ant Design's theming.

frontend/src/Layout/Footer.tsx

@@ -0,0 +1,5 @@
+import { Footer } from 'antd/es/layout/layout';
+
+export const AppFooter: React.FC = () => {
+  return <Footer>MitM Webserver App by Marcus Almert ©2025</Footer>;
+};