feat: add admin subscriptions management page with new Stripe service and sidebar navigation.

src/services/index.ts

@@ -88,3 +88,12 @@ export type {
 // Support Chat Service
 export { supportChatService } from './support-chat.service';
 export type { SupportChat, SupportMessage, MessagesResponse } from './support-chat.service';
+
+// Stripe Service
+export { adminStripeService } from './stripe.service';
+export type {
+  SubscriptionPlan,
+  AdminSubscription,
+  SubscriptionsListResponse,
+  RevenueStats,
+} from './stripe.service';