[enh] flask debug mode: reload the app when searx/settings.yml changes

from searx.network import stream as http_stream

from searx.answerers import ask

from searx.metrology.error_recorder import errors_per_engines

from searx.settings_loader import get_default_settings_path

# serve pages with HTTP/1.1

from werkzeug.serving import WSGIRequestHandler

        use_debugger=searx_debug,

        port=settings['server']['port'],

        host=settings['server']['bind_address'],

        threaded=True

        threaded=True,

        extra_files=[

            get_default_settings_path()

        ],

    )