Game server api (#23129)

* Stuff

* Fix RoundStatus Action

* Rename stuff

* Also needs to run on the main thread

* minor stuff

* Move to not be an EntitySystem

* Part 1 of making this less shit

* Make some more stuff run on main thread

* Actor check, logging and remove token from log.

* Better log

* Change ActionKick to use Guid instead of username

* Fix build

* Bandaid fix for test fails

Content.Shared/CCVar/CCVars.cs

@@ -29,6 +29,12 @@ namespace Content.Shared.CCVar
         public static readonly CVarDef<string> RulesHeader =
             CVarDef.Create("server.rules_header", "ui-rules-header", CVar.REPLICATED | CVar.SERVER);
 
+        /// <summary>
+        ///     The token used to authenticate with the admin API. Leave empty to disable the admin API. This is a secret! Do not share!
+        /// </summary>
+        public static readonly CVarDef<string> AdminApiToken =
+            CVarDef.Create("server.admin_api_token", string.Empty, CVar.SERVERONLY | CVar.CONFIDENTIAL);
+
         /*
          * Ambience
          */