destroyAll method
Method destroyAll deletes all entries on database
Implementation
@override
Future<int> destroyAll() async {
final builder = SqlBuilder.delete(schema.table!, whereArgs: []);
final completer = Completer<dynamic>()
..complete(database!.rawDelete(builder.sql, builder.arguments));
if (isLogger!) Logger.destroy(type, completer.future, builder);
return await completer.future;
}