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/layout.tsx

@@ -1,13 +1,13 @@
 import { Inter as SansFont } from 'next/font/google';
 import { cookies } from 'next/headers';
 
+import { Toaster } from '@kit/ui/sonner';
+import { cn } from '@kit/ui/utils';
+
 import { RootProviders } from '~/components/root-providers';
 import appConfig from '~/config/app.config';
 import { createI18nServerInstance } from '~/lib/i18n/i18n.server';
 
-import { Toaster } from '@kit/ui/sonner';
-import { cn } from '@kit/ui/utils';
-
 import '../styles/globals.css';
 
 const sans = SansFont({
@@ -51,7 +51,7 @@ function getClassName() {
 export const metadata = {
   title: appConfig.name,
   description: appConfig.description,
-  metadataBase: new URL(appConfig.url!),
+  metadataBase: new URL(appConfig.url),
   openGraph: {
     url: appConfig.url,
     siteName: appConfig.name,