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/public/locales/en/common.json

@@ -56,5 +56,9 @@
       "label": "Member",
       "description": "Cannot invite members or change settings"
     }
+  },
+  "billingInterval": {
+    "month": "Billed monthly",
+    "year": "Billed yearly"
   }
 }