Add own control buttons for element-call (#2744)

* add mutation observer hok

* add hook to read speaking member by observing iframe content

* display speaking member name in call status bar and improve layout

* fix shrining

* add joined call control bar

* remove chat toggle from room header

* change member speaking icon to mic

* fix joined call control appear in other

* show spinner on end call button

* hide call statusbar for mobile view when room is selected

* make call statusbar more mobile friendly

* fix call status bar item align

src/app/components/CallEmbedProvider.tsx

@@ -1,5 +1,6 @@
 import React, { ReactNode, useCallback, useRef } from 'react';
 import { useAtomValue, useSetAtom } from 'jotai';
+import { config } from 'folds';
 import {
   CallEmbedContextProvider,
   CallEmbedRefContextProvider,