feat: add admin dashboard schema and seeder

- Add Plan, Subscription, Payment, PaymentMethod, Coupon models
- Add ApiKey, Webhook models for API access
- Add AppConfig model for dynamic configuration
- Add role, suspendedAt fields to User model
- Create comprehensive seeder with:
  - Admin user (dwindi.ramadhana@gmail.com)
  - Default plans (Free, Pro Monthly, Pro Yearly)
  - Payment methods (BCA, Mandiri, GoPay)
  - App config (maintenance mode)
- Zero data loss migration strategy

apps/api/dist/users/users.service.d.ts

@@ -19,6 +19,10 @@ export declare class UsersService {
         otpWhatsappEnabled: boolean;
         otpTotpEnabled: boolean;
         otpTotpSecret: string | null;
+        role: string;
+        suspendedAt: Date | null;
+        suspendedReason: string | null;
+        lastLoginAt: Date | null;
     } | null>;
     updateProfile(userId: string, data: {
         name?: string;