[NEW][ENTERPRISE] Omnichannel Contact Manager as preferred agent for routing (#20244)

* Update index.js

* Livechat - auto assign visitor to contact-manager

* remove console logs

* Add improvements to Omnichannel Queue.

* Imoprovements on codebase.

* Final queue improvements.

* Removed unnecessary imports.

* Fix translations missing.

* Allow contact manager from different department to view the chat in their queue

* Fix Omnichannel Queue delegation.

* Fix default agent when unarchiving chats.

Co-authored-by: Guilherme Gazzo <guilhermegazzo@gmail.com>
Co-authored-by: Renato Becker <renato.augusto.becker@gmail.com>