feat: IndexedDB based caching for labels, inboxes and teams [CW-50] (#6710)

* feat: allow caching of labels in the account scope

* feat: send cache keys in account json response

* feat: kickstart web worker

* feat: setup basic architecture for workers

* feat: install idb

* feat: add datamanger

* fix: typos

* refactor: rename method

* feat: make init db a manual step

* refactor: separate accountIdFromRoute

* feat: cache enabled API client

* feat: enable caching for inboxes and labels

* feat: enable cache for team

* feat: manage exceptions for team

* feat: add team to data manager

* feat: add a generic listener

* refactor: send only cache keys

* refactor: separate validate method

* feat: add listeners

* feat: add event for revalidate

* feat: add cache keys endpoint

* refactor: fetch cache keys instead of full account data

* fix: key pattern

* feat: don't fetch account for cache_keys

* fix: cache key base class

* refactor: cache keys helper

* feat: add helper

* fix: cache-key update logic

* feat: delete indexeddb on logout

* feat: remove worker.js

* refactor: move data-manager

* refactor: name of file

* feat: add test for DataManager

* refactor: add fake idb to jest setup

* test: cache keys helper

* test: cache keys helper

* test: cache_keys in accounts controller

* refactor: remove cache_keys context

* feat: add policy for cache-keys

app/helpers/cache_keys_helper.rb

@@ -0,0 +1,15 @@
+module CacheKeysHelper
+  def get_prefixed_cache_key(account_id, key)
+    "idb-cache-key-account-#{account_id}-#{key}"
+  end
+
+  def fetch_value_for_key(account_id, key)
+    prefixed_cache_key = get_prefixed_cache_key(account_id, key)
+    value_from_cache = Redis::Alfred.get(prefixed_cache_key)
+
+    return value_from_cache if value_from_cache.present?
+
+    # zero epoch time: 1970-01-01 00:00:00 UTC
+    '0000000000'
+  end
+end