Added local RAG (#756)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Settings/IDataSource.cs

@@ -21,11 +21,6 @@ public interface IDataSource : IConfigurationObject
     /// </summary>
     public DataSourceType Type { get; init; }
 
-    /// <summary>
-    /// Which data security policy is applied to this data source?
-    /// </summary>
-    public DataSourceSecurity SecurityPolicy { get; init; }
-    
     /// <summary>
     /// The maximum number of matches to return when retrieving data from the ERI server.
     /// </summary>