bootstack.images.list_icons# bootstack.images.list_icons(contains=None)# List the available Bootstrap Icons names, sorted. Each name can be used as a widget’s icon= or passed to get_icon. Parameters: contains (str | None) – If given, only names containing this text (case-insensitive) are returned. Defaults to None (all names). Returns: A sorted list of icon names. Return type: list[str]