Mark LocalizeStringEvent entry as Smart

MarkSmart.cs

using UnityEditor;
using UnityEditor.Localization;
using UnityEngine.Localization.Components;

public class MarkSmart
{
    [MenuItem("CONTEXT/Component/Mark Smart", true)]
    public static bool MarkEntrySmartValidate(MenuCommand menuCommand) => menuCommand.context is LocalizeStringEvent;
    
    [MenuItem("CONTEXT/Component/Mark Smart", false)]
    public static void MarkEntrySmart(MenuCommand menuCommand)
    {
        var loc = menuCommand.context as LocalizeStringEvent;
        var collection = LocalizationEditorSettings.GetStringTableCollection(loc.StringReference.TableReference);
        foreach (var table in collection.StringTables)
        {
            var entry = table.GetEntryFromReference(loc.StringReference.TableEntryReference);
            entry.IsSmart = true;
            EditorUtility.SetDirty(table);
        }
    }
}