feat(edit_category): add EditCategory events

- Define events for the edit category bloc
- Loaded, NameChanged, DescriptionChanged, etc

Author: fulleni

lib/content_management/bloc/edit_category/edit_category_event.dart

@@ -0,0 +1,49 @@
+part of 'edit_category_bloc.dart';
+
+/// Base class for all events related to the [EditCategoryBloc].
+sealed class EditCategoryEvent extends Equatable {
+  const EditCategoryEvent();
+
+  @override
+  List<Object> get props => [];
+}
+
+/// Event to load the initial category data for editing.
+final class EditCategoryLoaded extends EditCategoryEvent {
+  const EditCategoryLoaded();
+}
+
+/// Event triggered when the category name input changes.
+final class EditCategoryNameChanged extends EditCategoryEvent {
+  const EditCategoryNameChanged(this.name);
+
+  final String name;
+
+  @override
+  List<Object> get props => [name];
+}
+
+/// Event triggered when the category description input changes.
+final class EditCategoryDescriptionChanged extends EditCategoryEvent {
+  const EditCategoryDescriptionChanged(this.description);
+
+  final String description;
+
+  @override
+  List<Object> get props => [description];
+}
+
+/// Event triggered when the category icon URL input changes.
+final class EditCategoryIconUrlChanged extends EditCategoryEvent {
+  const EditCategoryIconUrlChanged(this.iconUrl);
+
+  final String iconUrl;
+
+  @override
+  List<Object> get props => [iconUrl];
+}
+
+/// Event to submit the edited category data.
+final class EditCategorySubmitted extends EditCategoryEvent {
+  const EditCategorySubmitted();
+}