Adds emergency access to airlocks (#6500)

Content.Shared/Doors/Components/DoorComponent.cs

@@ -204,7 +204,8 @@ public enum DoorVisuals
 {
     State,
     Powered,
-    BoltLights
+    BoltLights,
+    EmergencyLights,
 }
 
 [Serializable, NetSerializable]

Content.Shared/Doors/Components/SharedAirlockComponent.cs

@@ -13,6 +13,10 @@ public abstract class SharedAirlockComponent : Component
     [ViewVariables(VVAccess.ReadWrite)]
     [DataField("safety")]
     public bool Safety = true;
+    
+    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField("emergencyAccess")]
+    public bool EmergencyAccess = false;
 }
 
 [Serializable, NetSerializable]

Content.Shared/Doors/Systems/SharedAirlockSystem.cs

@@ -38,4 +38,19 @@ public abstract class SharedAirlockSystem : EntitySystem
         if (airlock.Safety && DoorSystem.GetColliding(uid).Any())
             args.Cancel();
     }
+
+
+    public void UpdateEmergencyLightStatus(SharedAirlockComponent component)
+    {
+        if (TryComp<AppearanceComponent>(component.Owner, out var appearanceComponent))
+        {
+            appearanceComponent.SetData(DoorVisuals.EmergencyLights, component.EmergencyAccess);
+        }
+    }
+
+    public void ToggleEmergencyAccess(SharedAirlockComponent component)
+    {
+        component.EmergencyAccess = !component.EmergencyAccess;
+        UpdateEmergencyLightStatus(component);
+    }
 }