new project stable version

lib/domain/repositories/certificate_repository.dart

@@ -0,0 +1,11 @@
+import '../../core/result.dart';
+import '../entities/certificate.dart';
+
+abstract class CertificateRepository {
+  Future<Result<List<Certificate>>> getCertificates();
+  
+  Future<Result<Map<String, dynamic>>> purchaseCertificate({
+    required int certificateId,
+    required int cardId,
+  });
+}