Adds the Central Command outpost for Roundend and ERT to spawn at. (#9146)

* Adds Reach II

* Updated Reach II to work after refactor

* removing old map

* Adding the Central Command outpost

* Reachii isn't meant to be in here at all.

* updated possible error in .yml

* updating .yml

* Updated CentComm, fixed some issues like lighting.

* Imagine if we also docked at centcomm

* a

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/CCVar/CCVars.cs

@@ -1,5 +1,6 @@
 using Robust.Shared;
 using Robust.Shared.Configuration;
+using Robust.Shared.Utility;
 
 namespace Content.Shared.CCVar
 {
@@ -934,6 +935,12 @@ namespace Content.Shared.CCVar
         public static readonly CVarDef<bool> EmergencyShuttleEnabled =
             CVarDef.Create("shuttle.emergency_enabled", true, CVar.SERVERONLY);
 
+        /// <summary>
+        /// The map to load for centcomm for the emergency shuttle to dock to.
+        /// </summary>
+        public static readonly CVarDef<string> CentcommMap =
+            CVarDef.Create("shuttle.centcomm_map", "/Maps/centcomm.yml", CVar.SERVERONLY);
+
         /*
          * VIEWPORT
          */