feat: emit raise hand event to external API (#8312)

* Expose raise hand event to external application

* Fix linting issues

* fix the app non existing issue

react/features/toolbox/components/web/Toolbox.js

@@ -470,6 +470,7 @@ class Toolbox extends Component<Props, State> {
      */
     _doToggleRaiseHand() {
         const { _localParticipantID, _raisedHand } = this.props;
+        const newRaisedStatus = !_raisedHand;
 
         this.props.dispatch(participantUpdated({
             // XXX Only the local participant is allowed to update without
@@ -480,8 +481,10 @@ class Toolbox extends Component<Props, State> {
 
             id: _localParticipantID,
             local: true,
-            raisedHand: !_raisedHand
+            raisedHand: newRaisedStatus
         }));
+
+        APP.API.notifyRaiseHandUpdated(_localParticipantID, newRaisedStatus);
     }
 
     /**