Adds a very naïve download link to sudomemo

sudomemo-utilities.user.js

// ==UserScript==
// @name         Sudomemo Utilities
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Provide extra features to the sudomemo.net website!
// @author       Alexandre QUONIOU
// @match        https://*.sudomemo.net/watch/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=sudomemo.net
// @require      https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js
// @grant        GM_addStyle
// ==/UserScript==

(function() {
    $(".Panel__body").after ( `
    <div class="Panel__foot Panel__foot--invert">
        <div class="WatchDetails__sharePanel SharePanel">
            <div class="SharePanel__head">
                <h4 class="SharePanel__title">Download</h4>
                <div class="SharePanel__toggle"></div>
            </div>
            <div class="SharePanel__body">
                <a href="#" id="__Download">Download</a>
            </div>
        </div>
    </div>
    ` );

    $('#__Download').on( "click", function() {
        let playerSrc = $('.WatchPlayer__player').attr('src');
        let name = /sudomemo.net\/watch\/([a-z0-9]+)/g.exec(window.location.href)[1];
        fetch("https://archive.sudomemo.net" + playerSrc)
            .then(res => {
            return res.blob();
        })
            .then(blob => {
            const href = window.URL.createObjectURL(blob);
            const a = document.createElement("a");
            a.download = name + ".kwz";
            a.href = href;
            a.click();
            a.href = "";
        })
    } );;
})();