AbbDbContext: Move SqliteConnection extensions to Extensions class

Elwig/Helpers/Export/ElwigData.cs

@@ -345,7 +345,7 @@ namespace Elwig.Helpers.Export {
                                                                  $"mtime = {((DateTimeOffset)m.ModifiedAt.ToUniversalTime()).ToUnixTimeSeconds()} " +
                                                              $"WHERE ({primaryKeys[e.Key]}) = ({m.Id1}, {m.Id2});"));
                     using var cnx = AppDbContext.Connect();
-                    await AppDbContext.ExecuteBatch(cnx, $"""
+                    await cnx.ExecuteBatch($"""
                         BEGIN;
                         UPDATE client_parameter SET value = '0' WHERE param = 'ENABLE_TIME_TRIGGERS';
                         {string.Join("\n", updateStmts)}