Hangup when last person in call (based on url params) (#3372)

* Introduce condigurable auto leave option

* Read url params for auto leave

* add tests

* rename url param to `autoLeave`

* lint

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

* fix scope in CallViewModel tests

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

* use auto leave in DM case

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

* Make last once leave logic based on matrix user id (was participant id before)

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

* add test for multi device auto leave

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

---------

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

src/utils/test.ts

@@ -74,6 +74,7 @@ export interface OurRunHelpers extends RunHelpers {
     values?: { [marble: string]: T },
     error?: unknown,
   ): Behavior<T>;
+  scope: ObservableScope;
 }
 
 interface TestRunnerGlobal {
@@ -96,6 +97,7 @@ export function withTestScheduler(
   scheduler.run((helpers) =>
     continuation({
       ...helpers,
+      scope,
       schedule(marbles, actions) {
         const actionsObservable$ = helpers
           .cold(marbles)