Add Element call related functionality to new room header (#12091)

* New room header
 - add chat button during call
 - close lobby button in lobby
 - join button if session exists
 - allow to toggle call <-> timeline during call with call button

Compound style for join button in call notify toast.

Signed-off-by: Timo K <toger5@hotmail.de>

* dont show start call, join button in video rooms.

Signed-off-by: Timo K <toger5@hotmail.de>

* Make active call check based on participant count
Not based on available call object

Signed-off-by: Timo K <toger5@hotmail.de>

* fix room header tests

Signed-off-by: Timo K <toger5@hotmail.de>

* fix room header tests

Signed-off-by: Timo K <toger5@hotmail.de>

* remove chat button test for displaying.
Chat button display logic is now part of the RoomHeader.

Signed-off-by: Timo K <toger5@hotmail.de>

* remove duplicate notification Tread icon

Signed-off-by: Timo K <toger5@hotmail.de>

* remove obsolete jest snapshot

Signed-off-by: Timo K <toger5@hotmail.de>

* Update src/components/views/rooms/RoomHeader.tsx

Co-authored-by: Robin <robin@robin.town>

* update isECWidget logic

Signed-off-by: Timo K <toger5@hotmail.de>

* remove dead code

Signed-off-by: Timo K <toger5@hotmail.de>

* refactor call options
Add menu to choose if there are multiple options

Signed-off-by: Timo K <toger5@hotmail.de>

* join ec when clicking join button (dont start jitsi)
Use icon buttons
don't show call icon when join button is visible

Signed-off-by: Timo K <toger5@hotmail.de>

* refactor isViewingCall

Signed-off-by: Timo K <toger5@hotmail.de>

* fix room header tests

Signed-off-by: Timo K <toger5@hotmail.de>

* fix header snapshot

Signed-off-by: Timo K <toger5@hotmail.de>

* sonar proposals

Signed-off-by: Timo K <toger5@hotmail.de>

* fix event shiftKey may be undefined

Signed-off-by: Timo K <toger5@hotmail.de>

* more lobby time before timeout
only await sticky promise on becoming sticky.

Signed-off-by: Timo K <toger5@hotmail.de>

* don't allow starting new calls if there is an ongoing other call.

Signed-off-by: Timo K <toger5@hotmail.de>

* review

Signed-off-by: Timo K <toger5@hotmail.de>

* fix translation typo

Signed-off-by: Timo K <toger5@hotmail.de>

---------

Signed-off-by: Timo K <toger5@hotmail.de>
Co-authored-by: Robin <robin@robin.town>

src/components/structures/RoomView.tsx

@@ -821,7 +821,6 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
     private onActiveCalls = (): void => {
         if (this.state.roomId === undefined) return;
         const activeCall = CallStore.instance.getActiveCall(this.state.roomId);
-
         if (activeCall === null) {
             // We disconnected from the call, so stop viewing it
             dis.dispatch<ViewRoomPayload>(