[mod] introduce searx.engines.Engine for type hinting

import sys

import copy

from typing import List

from os.path import realpath, dirname

from babel.localedata import locale_identifiers

# set automatically when an engine does not have any tab category

OTHER_CATEGORY = 'other'

"""Defaults for the namespace of an engine module, see :py:func:`load_engine`"""

class Engine:  # pylint: disable=too-few-public-methods

    """This class is currently never initialized and only used for type hinting."""

    name: str

    engine: str

    shortcut: str

    categories: List[str]

    supported_languages: List[str]

    about: dict

    inactive: bool

    disabled: bool

    language_support: bool

    paging: bool

    safesearch: bool

    time_range_support: bool

    timeout: float

# Defaults for the namespace of an engine module, see :py:func:`load_engine``

categories = {'general': []}

engines = {}