Remove billing and checkout redirect buttons and related services

Deleted the billing-redirect-button, checkout-redirect-button, and embedded-stripe-checkout components. Additionally, removed the shadcn directory, which encompassed billing-related icons. This change streamlines the subscription settings interface and organizes the system's payment management. This update is a stepping stone towards improving the billing system's overall architecture.

apps/web/app/error.tsx

@@ -3,12 +3,13 @@
 import Link from 'next/link';
 
 import { ArrowLeftIcon } from 'lucide-react';
-import { SiteHeader } from '~/(marketing)/components/site-header';
 
 import { Button } from '@kit/ui/button';
 import { Heading } from '@kit/ui/heading';
 import { Trans } from '@kit/ui/trans';
 
+import { SiteHeader } from '~/(marketing)/components/site-header';
+
 const ErrorPage = () => {
   return (
     <div className={'flex h-screen flex-1 flex-col'}>