Added defensive logic to File Indexer for scenarios where file does not exist on disk. Added ability to reset the search index prior to reindexing.

Oqtane.Shared/Interfaces/ISearchProvider.cs

@@ -11,7 +11,7 @@ namespace Oqtane.Services
         Task<List<SearchResult>> GetSearchResultsAsync(SearchQuery searchQuery);
 
         Task SaveSearchContent(SearchContent searchContent, Dictionary<string, string> siteSettings);
-        
-        Task ResetIndex();
+
+        Task DeleteSearchContent(int siteId);
     }
 }