New Creator Notifications (#4383)

* Some new notification types

* Fix error

* Use existing DB models rather than inline queries

* Fix template fillout

* Fix ModerationThreadMessageReceived

* Insert more notifications, fix some formatting

* chore: query cache, clippy, fmt

* chore: query cache, clippy, fmt

* Use outer transactions to insert notifications instead of creating a new one

* Join futures

apps/labrinth/src/queue/email.rs

@@ -307,7 +307,7 @@ impl EmailQueue {
         };
 
         let message = templates::build_email(
-            &mut **txn,
+            txn,
             &self.redis,
             &self.client,
             user_id,