Re-work Arrivals Shuttle to have un-interactable substation and APC (#41884)

* power fixes

* no interactions

* fix

---------

Co-authored-by: ArtisticRoomba <145879011+ArtisticRoomba@users.noreply.github.com>

Resources/Prototypes/Entities/Structures/Power/Generation/generators.yml

@@ -210,6 +210,24 @@
     guides:
     - ShuttleCraft
 
+- type: entity
+  parent: BaseGeneratorWallmount
+  id: GeneratorWallmountAPULV
+  name: shuttle LV APU
+  description: An advanced auxiliary power unit for a shuttle.
+  components:
+  - type: NodeContainer
+    examinable: true
+    nodes:
+      output:
+        !type:CableDeviceNode
+        nodeGroupID: Apc
+  - type: PowerSupplier
+    voltage: Apc
+    supplyRate: 20000
+    supplyRampRate: 500
+    supplyRampTolerance: 500
+
 # RTG - no fuel requirement
 
 - type: entity