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/service/users/account.rs

@@ -405,11 +405,7 @@ impl super::Service {
 						"Username is not in this appservice's namespace."
 					)));
 				}
-			} else if self
-				.services
-				.appservice
-				.is_exclusive_user_id(&user_id)
-				.await
+			} else if self.services.appservice.is_exclusive_user_id(&user_id)
 				&& !emergency_mode_enabled
 			{
 				return Err!(Request(Exclusive("Username is reserved by an appservice.")));

src/service/users/device.rs

@@ -175,13 +175,7 @@ impl super::Service {
 		}
 
 		// Check for token collision with appservices
-		if self
-			.services
-			.appservice
-			.find_from_token(&token)
-			.await
-			.is_ok()
-		{
+		if self.services.appservice.find_from_token(&token).is_ok() {
 			return Err!(Request(InvalidParam(
 				"Token conflicts with an existing appservice token"
 			)));