Add GridWrapper and RetourEnHaut components

- Created GridWrapper component to wrap MUI Grid for easier usage.
- Implemented RetourEnHaut component for a "back to top" button with smooth scrolling and navigation to the homepage.

Dockerfile

@@ -13,5 +13,5 @@ RUN npm run build
 FROM nginx:stable-alpine AS production
 COPY --from=build /app/dist /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/conf.d/default.conf
-EXPOSE 80
+EXPOSE 80 443
 CMD ["nginx", "-g", "daemon off;"]