feat(local_ads_management): add events for saving draft and publishing native ad

- Introduce CreateLocalNativeAdSavedAsDraft event for saving native ad as a draft
- Add CreateLocalNativeAdPublished event for publishing native ad
- Remove unnecessary CreateLocalNativeAdSubmitted event

Author: fulleni

lib/local_ads_management/bloc/create_local_ads/create_local_native_ad_event.dart

@@ -66,10 +66,18 @@ final class CreateLocalNativeAdTargetUrlChanged
   List<Object?> get props => [targetUrl];
 }
 
-/// {@template create_local_native_ad_submitted}
-/// Event to request submission of the new local native ad.
+/// {@template create_local_native_ad_saved_as_draft}
+/// Event to request saving the new local native ad as a draft.
 /// {@endtemplate}
-final class CreateLocalNativeAdSubmitted extends CreateLocalNativeAdEvent {
-  /// {@macro create_local_native_ad_submitted}
-  const CreateLocalNativeAdSubmitted();
+final class CreateLocalNativeAdSavedAsDraft extends CreateLocalNativeAdEvent {
+  /// {@macro create_local_native_ad_saved_as_draft}
+  const CreateLocalNativeAdSavedAsDraft();
+}
+
+/// {@template create_local_native_ad_published}
+/// Event to request publishing the new local native ad.
+/// {@endtemplate}
+final class CreateLocalNativeAdPublished extends CreateLocalNativeAdEvent {
+  /// {@macro create_local_native_ad_published}
+  const CreateLocalNativeAdPublished();
 }