Evac shuttle (#8931)

Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Shared/Shuttles/BUIStates/EmergencyConsoleBoundUserInterfaceState.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.BUIStates;
+
+[Serializable, NetSerializable]
+public sealed class EmergencyConsoleBoundUserInterfaceState : BoundUserInterfaceState
+{
+    /// <summary>
+    /// null if we're not early launching.
+    /// </summary>
+    public TimeSpan? EarlyLaunchTime;
+    public List<string> Authorizations = new();
+    public int AuthorizationsRequired;
+
+    public TimeSpan? TimeToLaunch;
+}

Content.Shared/Shuttles/Events/EmergencyShuttleAuthorizeMessage.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.Events;
+
+[Serializable, NetSerializable]
+public sealed class EmergencyShuttleAuthorizeMessage : BoundUserInterfaceMessage
+{
+
+}

Content.Shared/Shuttles/Events/EmergencyShuttlePositionMessage.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.Events;
+
+/// <summary>
+/// For debugging the expected emergency shuttle position.
+/// </summary>
+[Serializable, NetSerializable]
+public sealed class EmergencyShuttlePositionMessage : EntityEventArgs
+{
+    public EntityUid? StationUid;
+    public Box2? Position;
+}

Content.Shared/Shuttles/Events/EmergencyShuttleRepealAllMessage.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.Events;
+
+[Serializable, NetSerializable]
+public sealed class EmergencyShuttleRepealAllMessage : BoundUserInterfaceMessage
+{
+
+}

Content.Shared/Shuttles/Events/EmergencyShuttleRepealMessage.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.Events;
+
+[Serializable, NetSerializable]
+public sealed class EmergencyShuttleRepealMessage : BoundUserInterfaceMessage
+{
+
+}

Content.Shared/Shuttles/Events/EmergencyShuttleRequestPositionMessage.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.Events;
+
+/// <summary>
+/// Raised on the client to request the expected position of the emergency shuttle for debugging.
+/// </summary>
+[Serializable, NetSerializable]
+public sealed class EmergencyShuttleRequestPositionMessage : EntityEventArgs
+{
+
+}

Content.Shared/Shuttles/Systems/SharedShuttleSystem.EmergencyConsole.cs

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+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Shuttles.Systems;
+
+public abstract partial class SharedShuttleSystem
+{
+
+}
+
+[Serializable, NetSerializable]
+public enum EmergencyConsoleUiKey : byte
+{
+    Key,
+}

Content.Shared/Shuttles/Systems/SharedShuttleSystem.cs

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+namespace Content.Shared.Shuttles.Systems;
+
+public abstract partial class SharedShuttleSystem : EntitySystem
+{
+
+}