Add subcription feature

frontend/src/api/services/auth.ts

@@ -37,6 +37,10 @@ export class AuthService {
     return apiClient.post<TokenResponse>(`${this.baseUrl}/register`, userData);
   }
 
+  async registerWithSubscription(userData: UserRegistration): Promise<UserRegistrationWithSubscriptionResponse> {
+    return apiClient.post<UserRegistrationWithSubscriptionResponse>(`${this.baseUrl}/register-with-subscription`, userData);
+  }
+
   async login(loginData: UserLogin): Promise<TokenResponse> {
     return apiClient.post<TokenResponse>(`${this.baseUrl}/login`, loginData);
   }