2023-December-05 - 2.6.14604

Run maps server as its own server (#12180)

* Run maps server as its own server

This update does a few thing:

- The majority of the update, splits off the Maps server code
  from Lobby & starts up the maps server on its own. Auth needs
  to be reworked still.

- adds a class called 'ClientIdentifiers' that we can use consistently
  to send all needed HTTP headers. Updates Maps HTTP Clients to accept
  and use ClientIdentifiers to create those headers. So, we now more
  consistently send all needed headers (for all maps related APIs at least)

* Add missing 'shadowJar' dependency