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/(marketing)/blog/[slug]/page.tsx

@@ -4,6 +4,7 @@ import { notFound } from 'next/navigation';
 import Script from 'next/script';
 
 import { allPosts } from 'contentlayer/generated';
+
 import appConfig from '~/config/app.config';
 import { withI18n } from '~/lib/i18n/with-i18n';