pulse-server: use the new timer-queue for timeouts

Use the timer queue for scheduling stream and object data timeouts.

This avoids allocating timerfds for these timeouts and the timer queue
can handle many timeouts more efficiently.

src/modules/module-protocol-pulse/internal.h

@@ -59,6 +59,7 @@ struct impl {
 	struct spa_hook_list hooks;
 	struct spa_list servers;
 
+	struct pw_timer_queue *timer_queue;
 	struct pw_work_queue *work_queue;
 	struct spa_list cleanup_clients;