insertJsonList method
Inserts into the list at path in file.
Implementation
@override
void insertJsonList(String file, List<Object> path, Object value, {int? at}) {
final list = _jsonAt(current?.file(file), path);
if (list is! List) return;
list.insert(at?.clamp(0, list.length) ?? list.length, value);
configEdited(file);
}