chore: Refactor worker, emails and data cleanup to task system (#3337)

* Refactor worker, all emails on task system

* fix

* lint

* fix: Remove a bunch of expect-error comments in related tests

* refactor: Move work from utils.gc into tasks

* test

* Add tracing to tasks and processors
fix: DebounceProcessor triggering on all events
Event.add -> Event.schedule

server/queues/processors/BaseProcessor.ts

@@ -0,0 +1,7 @@
+import { Event } from "@server/types";
+
+export default abstract class BaseProcessor {
+  static applicableEvents: Event["name"][] = [];
+
+  public abstract perform(event: Event): Promise<void>;
+}