Gives all nuclear bombs unique codes (#11665)

Co-authored-by: Kara <lunarautomaton6@gmail.com>

Content.Server/Nuke/NukeLabelSystem.cs

@@ -0,0 +1,21 @@
+namespace Content.Server.Nuke;
+
+/// <summary>
+///     This handles labelling an entity with a nuclear bomb label.
+/// </summary>
+public sealed class NukeLabelSystem : EntitySystem
+{
+    [Dependency] private readonly NukeSystem _nuke = default!;
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<NukeLabelComponent, MapInitEvent>(OnMapInit);
+    }
+
+    private void OnMapInit(EntityUid uid, NukeLabelComponent nuke, MapInitEvent args)
+    {
+        var label = Loc.GetString(nuke.NukeLabel, ("serial", _nuke.GenerateRandomNumberString(nuke.SerialLength)));
+        var meta = MetaData(uid);
+        meta.EntityName = $"{meta.EntityName} ({label})";
+    }
+}