add ability to create extensions that add localizations

function restart_reload(){

    document.body.innerHTML='<h1 style="font-family:monospace;margin-top:20%;color:lightgray;text-align:center;">Reloading...</h1>';

    setTimeout(function(){location.reload()},2000)

    return []

}

import sys

import traceback

localizations = {}

        localizations[fn] = os.path.join(dirname, file)

    from modules import scripts

    for file in scripts.list_scripts("localizations", ".json"):

        fn, ext = os.path.splitext(file.filename)

        localizations[fn] = file.path

def localization_js(current_localization_name):

    fn = localizations.get(current_localization_name, None)

import traceback

from collections import namedtuple

import modules.ui as ui

import gradio as gr

from modules.processing import StableDiffusionProcessing

face_restorers = []

localization.list_localizations(cmd_opts.localizations_dir)

def realesrgan_models_names():

    import modules.realesrgan_model

            shared.state.need_restart = True

        restart_gradio.click(

            fn=request_restart,

            _js='restart_reload',

            inputs=[],

            outputs=[],

            _js='restart_reload'

        )

        if column is not None: