Refactor how jobs are handed out (#5422)

* Completely refactor how job spawning works

* Remove remains of old system.

* Squash the final bug, cleanup.

* Attempt to fix tests

* Adjusts packed's round-start crew roster, re-enables a bunch of old roles.
Also adds the Central Command Official as a proper role.

* pretty up ui

* refactor StationSystem into the correct folder & namespace.

* remove a log, make sure the lobby gets updated if a new map is spontaneously added.

* re-add accidentally removed log

* We do a little logging

* we do a little resolving

* we do a little documenting

* Renamed OverflowJob to FallbackOverflowJob
Allows stations to configure their own roundstart overflow job list.

* narrator: it did not compile

* oops

* support having no overflow jobs

* filescope for consistency

* small fixes

* Bumps a few role counts for Packed, namely engis

* log moment

* E

* Update Resources/Prototypes/Entities/Objects/Misc/identification_cards.yml

Co-authored-by: Leon Friedrich <60421075+ElectroJr@users.noreply.github.com>

* Update Content.Server/Maps/GameMapPrototype.cs

Co-authored-by: Leon Friedrich <60421075+ElectroJr@users.noreply.github.com>

* factored job logic, cleanup.

* e

* Address reviews

* Remove the concept of a "default" grid.
It has no future in our new multi-station world

* why was clickable using that in the first place

* fix bad evil bug that almost slipped through
also adds chemist

* rms obsolete things from chemist

* Adds a sanity fallback

* address reviews

* adds ability to set name

* fuck

* cleanup joingame

Content.Server/GameTicking/GameTicker.Player.cs

@@ -1,8 +1,11 @@
 using System;
 using Content.Server.Players;
+using Content.Server.Roles;
+using Content.Server.Station;
 using Content.Shared.GameTicking;
 using Content.Shared.GameWindow;
 using Content.Shared.Preferences;
+using Content.Shared.Station;
 using JetBrains.Annotations;
 using Robust.Server.Player;
 using Robust.Shared.Enums;
@@ -107,7 +110,7 @@ namespace Content.Server.GameTicking
             async void SpawnWaitPrefs()
             {
                 await _prefsManager.WaitPreferencesLoaded(session);
-                SpawnPlayer(session);
+                SpawnPlayer(session, StationId.Invalid);
             }
 
             async void AddPlayerToDb(Guid id)