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>

Resources/Prototypes/GameRules/events.yml

@@ -404,7 +404,7 @@
     minimumPlayers: 20
     duration: 1
   - type: LoadMapRule
-    mapPath: /Maps/Shuttles/striker.yml
+    preloadedGrid: ShuttleStriker
   - type: NukeopsRule
     roundEndBehavior: Nothing
   - type: AntagSelection

Resources/Prototypes/GameRules/unknown_shuttles.yml

@@ -0,0 +1,74 @@
+- type: entity
+  id: UnknownShuttleCargoLost
+  parent: BaseGameRule
+  noSpawn: true
+  components:
+  - type: StationEvent
+    startAnnouncement: station-event-unknown-shuttle-incoming
+    startAudio:
+      path: /Audio/Announcements/attention.ogg
+    weight: 5
+    reoccurrenceDelay: 30
+    duration: 1
+  - type: LoadMapRule
+    preloadedGrid: ShuttleCargoLost
+
+- type: entity
+  id: UnknownShuttleTravelingCuisine
+  parent: BaseGameRule
+  noSpawn: true
+  components:
+  - type: StationEvent
+    startAnnouncement: station-event-unknown-shuttle-incoming
+    startAudio:
+      path: /Audio/Announcements/attention.ogg
+    weight: 5
+    reoccurrenceDelay: 30
+    duration: 1
+  - type: LoadMapRule
+    preloadedGrid: TravelingCuisine
+
+- type: entity
+  id: UnknownShuttleDisasterEvacPod
+  parent: BaseGameRule
+  noSpawn: true
+  components:
+  - type: StationEvent
+    startAnnouncement: station-event-unknown-shuttle-incoming
+    startAudio:
+      path: /Audio/Announcements/attention.ogg
+    weight: 5
+    reoccurrenceDelay: 30
+    duration: 1
+  - type: LoadMapRule
+    preloadedGrid: DisasterEvacPod
+
+- type: entity
+  id: UnknownShuttleHonki
+  parent: BaseGameRule
+  noSpawn: true
+  components:
+  - type: StationEvent
+    startAnnouncement: station-event-unknown-shuttle-incoming
+    startAudio:
+      path: /Audio/Announcements/attention.ogg
+    weight: 2
+    reoccurrenceDelay: 30
+    duration: 1
+  - type: LoadMapRule
+    preloadedGrid: Honki
+
+- type: entity
+  id: UnknownShuttleSyndieEvacPod
+  parent: BaseGameRule
+  noSpawn: true
+  components:
+  - type: StationEvent
+    startAnnouncement: station-event-unknown-shuttle-incoming
+    startAudio:
+      path: /Audio/Announcements/attention.ogg
+    weight: 2
+    reoccurrenceDelay: 30
+    duration: 1
+  - type: LoadMapRule
+    preloadedGrid: SyndieEvacPod