fix #2567 - migrate tenant connection string details from database to appsettings.json

Oqtane.Server/Repository/Interfaces/ISqlRepository.cs

@@ -1,4 +1,4 @@
-using System.Data;
+using System.Data;
 using System.Reflection;
 using Oqtane.Models;
 
@@ -18,6 +18,8 @@ namespace Oqtane.Repository
 
         IDataReader ExecuteReader(Tenant tenant, string query);
 
+        IDataReader ExecuteReader(string DBType, string DBConnectionString, string query);
+
         string GetScriptFromAssembly(Assembly assembly, string fileName);
     }
 }