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/plugins/call/CallControlState.ts

@@ -5,9 +5,21 @@ export class CallControlState {
 
   public readonly sound: boolean;
 
-  constructor(microphone: boolean, video: boolean, sound: boolean) {
+  public readonly screenshare: boolean;
+
+  public readonly spotlight: boolean;
+
+  constructor(
+    microphone: boolean,
+    video: boolean,
+    sound: boolean,
+    screenshare = false,
+    spotlight = false
+  ) {
     this.microphone = microphone;
     this.video = video;
     this.sound = sound;
+    this.screenshare = screenshare;
+    this.spotlight = spotlight;
   }
 }