New event: Approaching unknown shuttle (#24490)

* setup codebase

* Add first shuttle

* tak

* sync striker

* sync 2

* pipipi

* Preloaded roundstart shuttles!

* Make it abstract "PreloaderGrid" not "PreloaderShuttle"

* to do

* added china cuisin shuttle

* fixes

* add disaster evacpod

* remove enemy

* final shuttles

* weight 5 -> 10

* move data to component

* remove autotrailer touching

* doc, respath

* fix frozen positioning

* fixes + cvar

* finally

* fix evacpod

* remove blacklistrules

* remove `UnknownShuttleSpawnRule`, refactor `LoadMapRule` to support preloaded grids

* use tryload

* cleanup

* fixes

* use preloadedgrid for loneops

* weight unknown shuttles differently (preliminal)

* leftover

* cleanup and raffling

* partial review

* singleton gridpreloader no station coupling

* fix grid atmoses

* `roleLoadout` support for `LoadoutComponent`, fix missing gear

* weighting changes

* init logic fix

---------

Co-authored-by: Kara <lunarautomaton6@gmail.com>

Content.Server/GameTicking/Rules/Components/LoadMapRuleComponent.cs

@@ -1,4 +1,6 @@
 using Content.Server.Maps;
+using Content.Shared.GridPreloader.Prototypes;
+using Content.Shared.Storage;
 using Content.Shared.Whitelist;
 using Robust.Shared.Map;
 using Robust.Shared.Prototypes;
@@ -16,11 +18,14 @@ public sealed partial class LoadMapRuleComponent : Component
     public MapId? Map;
 
     [DataField]
-    public ProtoId<GameMapPrototype>? GameMap ;
+    public ProtoId<GameMapPrototype>? GameMap;
 
     [DataField]
     public ResPath? MapPath;
 
+    [DataField]
+    public ProtoId<PreloadedGridPrototype>? PreloadedGrid;
+
     [DataField]
     public List<EntityUid> MapGrids = new();