feat: Add support for listing saved payment methods in module and Stripe (#10994)

packages/modules/payment/src/providers/system.ts

@@ -1,5 +1,6 @@
 import {
   CreatePaymentProviderSession,
+  PaymentMethodResponse,
   PaymentProviderError,
   PaymentProviderSessionResponse,
   ProviderWebhookPayload,
@@ -72,6 +73,10 @@ export class SystemProviderService extends AbstractPaymentProvider {
     return {}
   }
 
+  async listPaymentMethods(_): Promise<PaymentMethodResponse[]> {
+    return []
+  }
+
   async getWebhookActionAndData(
     data: ProviderWebhookPayload["payload"]
   ): Promise<WebhookActionResult> {