Support using Element Call for voice calls in DMs (#30817)

* Add voiceOnly options.

* tweaks

* Nearly working demo

* Lots of minor fixes

* Better working version

* remove unused payload

* bits and pieces

* Cleanup based on new hints

* Simple refactor for skipLobby (and remove returnToLobby)

* Tidyup

* Remove unused tests

* Update tests for voice calls

* Add video room support.

* Add a test for video rooms

* tidy

* remove console log line

* lint and tests

* Bunch of fixes

* Fixes

* Use correct title

* make linter happier

* Update tests

* cleanup

* Drop only

* update snaps

* Document

* lint

* Update snapshots

* Remove duplicate test

* add brackets

* fix jest

test/unit-tests/components/views/voip/CallView-test.tsx

@@ -32,6 +32,7 @@ import { MatrixClientPeg } from "../../../../../src/MatrixClientPeg";
 import { CallView as _CallView } from "../../../../../src/components/views/voip/CallView";
 import { WidgetMessagingStore } from "../../../../../src/stores/widgets/WidgetMessagingStore";
 import { CallStore } from "../../../../../src/stores/CallStore";
+import DMRoomMap from "../../../../../src/utils/DMRoomMap";
 
 const CallView = wrapInMatrixClientContext(_CallView);
 
@@ -50,6 +51,7 @@ describe("CallView", () => {
 
         stubClient();
         client = mocked(MatrixClientPeg.safeGet());
+        DMRoomMap.makeShared(client);
 
         room = new Room("!1:example.org", client, "@alice:example.org", {
             pendingEventOrdering: PendingEventOrdering.Detached,