init cc

lib/shared/domain/usecases/usecase.dart

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+import '../../../core/utils/typedef.dart';
+
+/// Base usecase class for implementing clean architecture use cases
+abstract class UseCase<T, Params> {
+  const UseCase();
+
+  /// Execute the use case with given parameters
+  AsyncResult<T> call(Params params);
+}
+
+/// Use case that doesn't require any parameters
+abstract class UseCaseWithoutParams<T> {
+  const UseCaseWithoutParams();
+
+  /// Execute the use case without parameters
+  AsyncResult<T> call();
+}
+
+/// No parameters class for use cases that don't need parameters
+class NoParams {
+  const NoParams();
+}