fix for new BBB and Add Automatic Updates

Changes:

1. Match Adjustments: modified to be compatible with the new .cloud URL
2. Added Update and Download URLs: Users will now be automatically prompted if a new version is available
3. Updated CSS Selector: The CSS selector has been replaced to identify the "Top Right Container" element.

bbb-volume-slider.user.js

 // ==UserScript==
 // @name         BBB Volume Slider
 // @website      https://code.fbi.h-da.de/istddmue2/bbb-volume-slider-userscript
-// @version      0.2
+// @version      0.3
 // @description  Adds a volume slider
 // @author       Daniel Müller
 // @match        https://*.h-da.de/html5client/join*
+// @match        https://*.h-da.cloud/html5client/join*
+// @updateURL    https://code.fbi.h-da.de/istddmue2/bbb-volume-slider-userscript/-/raw/master/bbb-volume-slider.user.js
+// @downloadURL  https://code.fbi.h-da.de/istddmue2/bbb-volume-slider-userscript/-/raw/master/bbb-volume-slider.user.js
 // @grant        none
 // ==/UserScript==
 
@@ -13,7 +16,7 @@ async function sleep(ms) {
 }
 
 function getTopRightContainer() {
-    return document.querySelector("div[class^=top] div[class^=right]");
+    return document.querySelector(".sc-jLVpRp.eRnBWT");
 }
 
 function remoteMedia() {