Shuttle drone improvements (#16931)

Content.Server/Station/Events/StationPostInitEvent.cs

@@ -0,0 +1,7 @@
+namespace Content.Server.Station.Events;
+
+/// <summary>
+/// Raised directed on a station after it has been initialized.
+/// </summary>
+[ByRefEvent]
+public readonly record struct StationPostInitEvent;

Content.Server/Station/Systems/StationSystem.cs

@@ -2,6 +2,7 @@ using System.Linq;
 using Content.Server.Chat.Systems;
 using Content.Server.GameTicking;
 using Content.Server.Station.Components;
+using Content.Server.Station.Events;
 using Content.Shared.CCVar;
 using Content.Shared.Station;
 using JetBrains.Annotations;
@@ -304,6 +305,9 @@ public sealed class StationSystem : EntitySystem
             AddGridToStation(station, grid, null, data, name);
         }
 
+        var ev = new StationPostInitEvent();
+        RaiseLocalEvent(station, ref ev);
+
         return station;
     }