Move user deletion to worker (#15586)

* WIP(delete): remove business logic from controller

* fix(deletion): handle group leave logic on app server still

* fix(lint): unused import

* fix(import): bracket syntax

* fix(test): adapt test for worker flow

* fix(deletion): update delete/feedback form copy

* fix(text): don't break to new paragraph about Gems

* fix(deletion): remove orphaned chat messages

* Revert "fix(deletion): handle group leave logic on app server still"

This reverts commit 9db541f4c3.

* fix(tests): remove tests
These can potentially be tested in the worker's suite? They target functionality that the group leave route handles within the deletion flow

* fix(lint): no-undef

* refactor redis setup into own file and use ioredis

* use bullmq directly to schedule jobs

* add space

* add key prefix

* add semicolon

* fix(jobs): update redis package

---------

Co-authored-by: Phillip Thelen <phillip@habitica.com>

package.json

@@ -19,6 +19,7 @@
     "bcrypt": "^5.1.1",
     "body-parser": "^1.20.3",
     "bootstrap": "^4.6.2",
+    "bullmq": "^5.71.1",
     "compression": "^1.8.1",
     "cookie-session": "^2.1.1",
     "coupon-code": "^0.4.5",
@@ -44,6 +45,7 @@
     "heapdump": "^0.3.15",
     "helmet": "^4.6.0",
     "in-app-purchase": "^1.11.3",
+    "ioredis": "^5.10.1",
     "js2xmlparser": "^5.0.0",
     "jsonwebtoken": "^9.0.2",
     "jwks-rsa": "^2.1.5",
@@ -67,7 +69,6 @@
     "pp-ipn": "^1.1.0",
     "ps-tree": "^1.0.0",
     "rate-limiter-flexible": "^2.4.2",
-    "redis": "^3.1.2",
     "remove-markdown": "^0.5.0",
     "rimraf": "^3.0.2",
     "short-uuid": "^4.2.2",