refactor(service): Use SyncRwLock and SyncMutex for in-memory services

Convert in-memory data structures in appservice, rooms::typing, and sync
wakers to use SyncRwLock and SyncMutex. Drop appservice locks before
making outbound network requests in room alias queries and federation
invites.

src/api/client/sync/v3/mod.rs

@@ -201,7 +201,7 @@ pub(crate) async fn sync_events_route(
 		.update_device_last_seen(sender_user, Some(sender_device), client_ip)
 		.await;
 
-	let mut wake_receiver = services.sync.subscribe_to_wake(sender_user).await;
+	let mut wake_receiver = services.sync.subscribe_to_wake(sender_user);
 	let response = build_sync_events(&services, &body).await?;
 	if body.body.full_state
 		|| !(response.rooms.is_empty()

src/api/client/sync/v5.rs

@@ -147,7 +147,7 @@ pub(crate) async fn sync_events_v5_route(
 			.sync
 			.update_snake_sync_request_with_cache(&snake_key, globalsince, &mut body);
 
-	let mut wake_receiver = services.sync.subscribe_to_wake(sender_user).await;
+	let mut wake_receiver = services.sync.subscribe_to_wake(sender_user);
 	let mut collection = collect_sync_response(
 		services,
 		sender_user,