new project stable version

lib/domain/usecase/login_usecase.dart

@@ -0,0 +1,11 @@
+import '../repositories/auth_repository.dart';
+
+class LoginUseCase {
+  final AuthRepository _repository;
+
+  LoginUseCase(this._repository);
+
+  Future<String> execute(String phone) async {
+    return await _repository.login(phone);
+  }
+}