fix(sidebar): add mobile sidebar

src/app/layout.tsx

@@ -3,7 +3,7 @@ import { ReactNode } from 'react';
 import { Montserrat, Roboto } from 'next/font/google';
 import '@core/styles/globals.scss';
 import '@core/styles/reset.scss';
-import { Footer, Header } from '@/widgets';
+import { Footer, Header, MobileCallback } from '@/widgets';
 import { ModalProvider } from '@core/providers/modal-provider';
 
 const roboto = Roboto({
@@ -34,6 +34,7 @@ export default function RootLayout({
           <Header />
           <main>{children}</main>
           <Footer />
+          <MobileCallback />
         </ModalProvider>
       </body>
     </html>