Update billing system to support single and recurring payments

This update modifies the billing system to properly handle both single and recurring payment plans. Logic is introduced to determine whether the selected plan is recurring or a one-time payment and adjust the interface accordingly. The naming of some components and variables has been changed to more accurately reflect their purpose. Additionally, a

apps/web/config/billing.config.ts

@@ -7,6 +7,29 @@ const provider = BillingProviderSchema.parse(
 export default createBillingSchema({
   provider,
   products: [
+    {
+      id: 'lifetime',
+      name: 'Lifetime',
+      description: 'The perfect plan for a lifetime',
+      currency: 'USD',
+      features: ['Feature 1', 'Feature 2', 'Feature 3'],
+      plans: [
+        {
+          name: 'Lifetime',
+          id: 'lifetime',
+          paymentType: 'one-time',
+          lineItems: [
+            {
+              id: 'price_1P0jgcI1i3VnbZTqXVXaZkMP',
+              name: 'Base',
+              description: 'Base plan',
+              cost: 999.99,
+              type: 'base',
+            },
+          ],
+        },
+      ],
+    },
     {
       id: 'starter',
       name: 'Starter',