chore: Move initial avatar upload to background worker (#3727)

* chore: Async user avatar upload processor

* chore: Async team avatar upload

* Refactor to task for retries

* Docs
Include avatarUrl in task props to prevent race condition
Remove transaction around upload fetch request

server/queues/tasks/UploadTeamAvatarTask.ts

@@ -0,0 +1,40 @@
+import { v4 as uuidv4 } from "uuid";
+import { Team } from "@server/models";
+import { uploadToS3FromUrl } from "@server/utils/s3";
+import BaseTask, { TaskPriority } from "./BaseTask";
+
+type Props = {
+  /* The teamId to operate on */
+  teamId: string;
+  /* The original avatarUrl from the SSO provider */
+  avatarUrl: string;
+};
+
+/**
+ * A task that uploads the provided avatarUrl to S3 storage and updates the
+ * team's record with the new url.
+ */
+export default class UploadTeamAvatarTask extends BaseTask<Props> {
+  public async perform(props: Props) {
+    const team = await Team.findByPk(props.teamId, {
+      rejectOnEmpty: true,
+    });
+
+    const avatarUrl = await uploadToS3FromUrl(
+      props.avatarUrl,
+      `avatars/${team.id}/${uuidv4()}`,
+      "public-read"
+    );
+
+    if (avatarUrl) {
+      await team.update({ avatarUrl });
+    }
+  }
+
+  public get options() {
+    return {
+      attempts: 3,
+      priority: TaskPriority.Normal,
+    };
+  }
+}