Give nukies the ability to declare war for a TC boost (#19291)

Co-authored-by: Kevin Zheng <kevinz5000@gmail.com>

Content.Client/NukeOps/WarDeclaratorBoundUserInterface.cs

@@ -0,0 +1,49 @@
+using Content.Shared.NukeOps;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Shared.Timing;
+
+namespace Content.Client.NukeOps;
+
+[UsedImplicitly]
+public sealed class WarDeclaratorBoundUserInterface : BoundUserInterface
+{
+    [ViewVariables]
+    private WarDeclaratorWindow? _window;
+
+    public WarDeclaratorBoundUserInterface(EntityUid owner, Enum uiKey) : base(owner, uiKey) {}
+
+    protected override void Open()
+    {
+        base.Open();
+
+        _window = new WarDeclaratorWindow();
+        if (State != null)
+            UpdateState(State);
+
+        _window.OpenCentered();
+
+        _window.OnClose += Close;
+        _window.OnActivated += OnWarDeclaratorActivated;
+    }
+
+    protected override void UpdateState(BoundUserInterfaceState state)
+    {
+        base.UpdateState(state);
+        if (_window == null || state is not WarDeclaratorBoundUserInterfaceState cast)
+            return;
+
+        _window?.UpdateState(cast);
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+        if (disposing) _window?.Dispose();
+    }
+
+    private void OnWarDeclaratorActivated(string message)
+    {
+        SendMessage(new WarDeclaratorActivateMessage(message));
+    }
+}