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/api/billing/webhook/route.ts

@@ -0,0 +1,50 @@
+import { getBillingEventHandlerService } from '@kit/billing-gateway';
+import { Logger } from '@kit/shared/logger';
+import { getSupabaseRouteHandlerClient } from '@kit/supabase/route-handler-client';
+
+import billingConfig from '~/config/billing.config';
+
+/**
+ * @description Handle the webhooks from Stripe related to checkouts
+ */
+export async function POST(request: Request) {
+  const client = getSupabaseRouteHandlerClient();
+
+  // we can infer the provider from the billing config or the request
+  // for simplicity, we'll use the billing config for now
+  // TODO: use dynamic provider from request?
+  const provider = billingConfig.provider;
+
+  Logger.info(
+    {
+      name: 'billing',
+      provider,
+    },
+    `Received billing webhook. Processing...`,
+  );
+
+  const service = await getBillingEventHandlerService(client, provider);
+
+  try {
+    await service.handleWebhookEvent(request);
+
+    Logger.info(
+      {
+        name: 'billing',
+      },
+      `Successfully processed billing webhook`,
+    );
+
+    return new Response('OK', { status: 200 });
+  } catch (e) {
+    Logger.error(
+      {
+        name: 'billing',
+        error: e,
+      },
+      `Failed to process billing webhook`,
+    );
+
+    return new Response('Error', { status: 500 });
+  }
+}