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/features/call-status/MemberSpeaking.tsx

@@ -14,7 +14,7 @@ export function MemberSpeaking({ room, speakers }: MemberSpeakingProps) {
   );
   return (
     <Box alignItems="Center" gap="100">
-      <Icon size="100" src={Icons.Phone} filled />
+      <Icon size="100" src={Icons.Mic} filled />
       <Text size="T200" truncate>
         {speakingNames.length === 1 && (
           <>