new project stable version

lib/core/result.dart

@@ -0,0 +1,13 @@
+import 'failures.dart';
+
+sealed class Result<T> {}
+
+class Success<T> extends Result<T> {
+  final T? data;
+  Success(this.data);
+}
+
+class Failure<T> extends Result<T> {
+  final EntityFailure failure;
+  Failure(this.failure);
+}