Carp wave spawner and dragons as an actual event (#10254)

Content.Shared/Dragon/SharedDragonRiftComponent.cs

@@ -0,0 +1,19 @@
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Dragon;
+
+[NetworkedComponent]
+public abstract class SharedDragonRiftComponent : Component
+{
+    [ViewVariables, DataField("state")]
+    public DragonRiftState State = DragonRiftState.Charging;
+}
+
+[Serializable, NetSerializable]
+public enum DragonRiftState : byte
+{
+    Charging,
+    AlmostFinished,
+    Finished,
+}